- Abbato (historical)
- Abbott
- Aberdeen
- Abilene
- Acalanes Ridge (Acalanes Ridge Census Designated Place)
- Acampo
- Acebedo
- Acme (historical)
- Acolita
- Acorn, Santa Barbara County
- Acorn, Alameda County
- Actis
- Acton
- Adams
- Adams Point
- Adams Square
- Adela
- Adelaida
- Adelanto
- Adobe Corner
- Adobe Meadow
- Advance
- Aerial Acres
- Aero Pines Mobile Home Park
- Aetna Springs
- Afton, Glenn County
- Afton, San Bernardino County
- Agnew
- Agoura
- Agoura Hills
- Agra
- Agua Caliente
- Agua Dulce
- Agua Fria, Mariposa County
- Agua Fria, San Bernardino County
- Aguanga
- Ahwahnee
- Ahwahnee Estates
- Ahwin (historical)
- Ailsa (historical)
- Akers
- Al Tahoe
- Alabama Hill
- Alabama Hills
- Alameda, Kern County
- Alameda, Alameda County
- Alameda Point
- Alamitos
- Alamo
- Alamo Oaks
- Alamo Square
- Alamorio
- Alba
- Albany
- Alberhill
- Albion
- Albrae
- Alcatraz
- Alder Creek
- Alder Springs, Fresno County
- Alder Springs, Glenn County
- Aldercroft Heights
- Alderglen Springs
- Alemandra
- Alessandro
- Alfac (historical)
- Algerine
- Algodon (historical)
- Algoso
- Alhambra
- Alicia
- Alico
- Alimur Park Mobile Home Park
- Alisal
- Aliso
- Aliso Viejo
- Aliso Village
- Alla
- Alleghany
- Allegro Heights
- Allen
- Allendale, Solano County
- Allendale, Alameda County
- Allensworth
- Alliance Redwood
- Allied Gardens
- Alma (historical)
- Almond
- Almonte
- Aloha Mobile Village
- Alondra Park
- Alpaugh
- Alpha (historical)
- Alpine, Los Angeles County
- Alpine, Mendocino County
- Alpine, San Diego County
- Alpine (historical)
- Alpine Heights
- Alpine Meadows
- Alpine Village, Alpine County
- Alpine Village, Riverside County
- Alpine Village Mobile Home Estates
- Alray
- Alsace
- Alta
- Alta (historical)
- Alta Hill
- Alta Loma
- Alta Mesa
- Alta Sierra, Kern County
- Alta Sierra, Nevada County
- Alta Sierra Estates
- Alta Sierra Ranches
- Alta Vista
- Alta Vista (historical)
- Alta Vista Park
- Altacanyada
- Altadena
- Altamont
- Altaville
- Alten
- Alturas
- Alum Rock
- Alviso
- Amador City
- Amanico Ergina Village
- Amber Hills
- Amberwood Mobile Home Park
- Ambler Park
- Amboy
- Ambrose (historical)
- American Canyon
- American Hill (historical)
- Americana Mobile Home Park
- Amesti
- Amos
- Ampere
- Amsterdam
- Anaheim
- Anaheim Hills
- Anaheim Mobile Home Estates
- Anaheim Royal Mobile Home Park
- Anaheim Shores
- Anchor Bay
- Anderson
- Andersonia
- Andover
- Andover (historical)
- Andrade Corner
- Andry Mobile Home Park
- Angelino Heights
- Angels Camp
- Angelus Oaks
- Angiola
- Angwin
- Anita
- Annapolis
- Annette
- Ansel
- Antelope
- Antelope (historical)
- Antelope Acres
- Antelope Center
- Antelope Hills
- Antes
- Antioch
- Antonio
- Anza, Riverside County
- Anza, Imperial County
- Anza Vista
- Apex
- Apollo
- Apple Valley
- Apple Valley Estates
- Apple Valley Highlands
- Applegate
- Aptos
- Aptos Hills
- Aptos Hills-Larkin Valley
- Arabian Gardens Mobile Home Park
- Arastraville
- Araz Junction
- Arbee
- Arbios
- Arboga
- Arbolada
- Arbor
- Arbuckle
- Arcade, Yolo County
- Arcade, Sacramento County
- Arcadia
- Arcata
- Archer
- Arcilla
- Arden Town
- Arden-Arcade
- Arena
- Argentine (historical)
- Argos
- Arguello
- Argus
- Arlanza
- Arlight
- Arlington
- Arlington Heights
- Arlington Station
- Armistead
- Armona
- Armstrong, Nevada County
- Armstrong, San Joaquin County
- Arno (historical)
- Arnold, Calaveras County
- Arnold, Mendocino County
- Arnold (historical)
- Arnold Heights
- Aromas
- Arrowbear Lake
- Arrowhead
- Arrowhead Equestrian Estates
- Arrowhead Farms
- Arrowhead Highlands
- Arrowhead Junction
- Arrowhead Springs
- Arroyo Fairways Mobile Home Club
- Arroyo Grande, San Luis Obispo County
- Arroyo Mobile Home Park
- ARroyo Trailer Park
- Arroyo Vista
- Arroz
- Artesia
- Artois
- Arts Trailer Court
- Arundel (historical)
- Arvin
- Arvin Mobile Home Estates
- Asco
- Ash (historical)
- Ash Hill
- Ashbury Heights
- Ashford Junction
- Ashford Mill (historical)
- Ashland
- Ashrama
- Aspen Springs
- Aspen Valley
- Aspendell
- Asphalt Mines (historical)
- Asphalto (historical)
- Asti
- Asuncion
- Asylum
- Atascadero
- Atchison Village
- Athens
- Atherton
- Athlone
- Atlanta
- Atlas
- Atolia
- Atwater, Los Angeles County
- Atwater, Merced County
- Atwood
- Auberry
- Auburn
- Auburn Hills Mobile Estates
- Auburn Lake Trails
- August
- Aukum
- Auld (historical)
- Aurant
- Aurora
- Austin
- Avalon
- Avalon Gardens
- Avalon Village
- Avena
- Avenal
- Avenue E Trailer Park
- Avery
- Avila Beach
- Avinsino Corner
- Avocado
- Avocado Heights
- Avon
- Azure Vista
- Azusa
- Badger
- Badger Hill (historical)
- Badwater
- Bagby
- Bagdad
- Bahia
- Bahia Trailer Villa
- Bailey Flats (historical)
- Bailhache
- Bak
- Baker, Kern County
- Baker, San Bernardino County
- Bakersfield
- Balance Rock
- Balboa
- Balboa Island
- Balboa Terrace
- Balch
- Balch Camp
- Balderson Station
- Baldwin Hills
- Baldwin Lake
- Baldwin Park
- Baldy Mesa
- Bale
- Bali-Hi Mobile Home Lodge
- Ballarat
- Ballard
- Ballena
- Ballico
- Ballou
- Balls Ferry Fishing Resort
- Baltimore (historical)
- Baltimore Park
- Baltimore Town
- Bamom (historical)
- Bancroft
- Bancroft Point
- Bandini, Los Angeles County
- Bangle
- Bangor
- Bankhead Springs
- Banner
- Banner (historical)
- Banner Crest
- Banning
- Bannister
- Bannock
- Bannockburn Village
- Banta
- Bar J Ranch
- Barber
- Barber City
- Bard
- Bardi
- Bardsdale
- Barkerville (historical)
- Barlow
- Baroda
- Barona
- Baronet Estates
- Barrett, San Diego County
- Barrett, Mariposa County
- Barrett Junction
- Barrio Logan
- Barro
- Barron Park
- Barstow, Fresno County
- Barstow, San Bernardino County
- Barstow Heights
- Barsug
- Bartlett
- Bartlett Springs
- Bartolo
- Bartolo (historical)
- Barton
- Basin
- Bass Lake
- Bass Lake Annex
- Bassett
- Bassetts
- Batavia
- Bath (historical)
- Batto
- Baumberg
- Baxter
- Baxter (historical)
- Bay Park
- Bay Point
- Bay Shores
- Bayliss
- Bayo Vista
- Bayshore
- Bayside
- Bayside Village
- Bayview, Contra Costa County
- Bayview, Humboldt County
- Bayview District
- Bayview-Montalvin
- Baywood Park, San Luis Obispo County
- Baywood Park, San Mateo County
- Beach West Mobile Home Estates
- Beachview Mobile Home Park
- Beachwood Trailer Park
- Beacon Station
- Beale Air Force Base
- Bealville
- Bean (historical)
- Bear Creek, Merced County
- Bear Creek, San Joaquin County
- Bear River Pines
- Bear Valley, Alpine County
- Bear Valley, Mariposa County
- Bear Valley (historical)
- Bear Valley Springs
- Beatrice
- Beatty Junction
- Beaumont
- Beckwourth
- Bee Rock
- Beeks Place
- Bel Air
- Bel Air Mobile Home Park
- Bel Aire
- Bel Marin Keys
- Belfast (historical)
- Belfort
- Bell
- Bell Gardens
- Bell Harbor Mobile Home Park
- Bell Mountain
- Bell Springs
- Bella Vista, Tulare County
- Bella Vista, Shasta County
- Bella Vista Park
- Belle Haven
- Belle Monte
- Belleview
- Belleview Acres
- Bellevue
- Bellevue (historical)
- Bellevue Heights
- Bellflower
- Bellota
- Bells Bar (historical)
- Belltown
- Bellvale
- Bellview Park Mobile Home Park
- Bellwood Estates
- Belmont
- Belmont Heights
- Belmont Shore
- Beltaine (historical)
- Belvedere, Los Angeles County
- Belvedere, Marin County
- Belvedere Gardens
- Belvedere Heights
- Belvedere Island
- Ben Ali
- Ben Hur
- Ben Lomond
- Bena
- Bender (historical)
- Benicia
- Benito
- Benton
- Benton Crossing
- Benton Hot Springs
- Berenda
- Berkeley
- Bermuda Dunes
- Bermuda Palms Mobile Park
- Bern
- Bernal Heights
- Bernice (historical)
- Berry Creek
- Berrydale Trailer Park
- Berryessa
- Berryessa Highlands
- Bertram
- Bertsch-Oceanview
- Betabel (historical)
- Bethany Park
- Bethel Island
- Bethune
- Betteravia
- Betteravia Junction
- Beulah Park
- Beveridge
- Beverly Center
- Beverly Glen
- Beverly Hills
- Beverlywood
- Bicknell
- Bidwell (historical)
- Bidwell Bar (historical)
- Big Bar, Butte County
- Big Bar, Calaveras County
- Big Bear City
- Big Bear Lake
- Big Bend, Butte County
- Big Bend, Placer County
- Big Bend, Sonoma County
- Big Bunch
- Big Creek
- Big Meadow
- Big Oak Flat
- Big Oak Valley
- Big Pine
- Big Pines
- Big Ripples (historical)
- Big River
- Big Rock Springs
- Big Sur
- Big Trees
- Big Trees Village
- Big Valley
- Biggs
- Bihlman (historical)
- Bijou
- Bijou Park
- Bingham
- Binghamton
- Binney Junction
- Biola
- Biola Junction
- Birch Meadow Acres
- Birchville
- Birds Landing
- Bishop
- Bishop Trail Park
- Biskra Palms
- Bismarck (historical)
- Bissell
- Bit-O-Home Trailer Park
- Bitney Corner
- Bitterwater
- Bivalve
- Bixby Knolls
- Bixler
- Black Jack Bluffs
- Black Meadow Landing
- Black Oak Estates
- Black Oaks
- Black Point
- Black Point-Green Point
- Blackhawk
- Blacklake (Blacklake Census Designated Place)
- Blackrock
- Blackslough Landing
- Blackwells Corner
- Blairsden
- Blakes Landing
- Blanchard
- Blanco
- Blavo
- Blinzing (historical)
- Bliss (historical)
- Bloomer (historical)
- Bloomfield
- Bloomington
- Blossom Valley, San Diego County
- Blossom Valley, Santa Clara County
- Blue Canyon
- Blue Hills
- Blue Jay
- Blue Lake
- Blue Lake Junction
- Blue Lake Springs
- Blue Tent
- Bluegum
- Bluewater
- Bluff Heights
- Bluff Park
- Blumenberg (historical)
- Bly
- Blythe
- Blythe Marina Mobile Estates
- Boal
- Boards Crossing
- Boca
- Bodega
- Bodega Bay
- Bodfish
- Bodie
- Bogue
- Boiling Point
- Bolinas
- Bolsa
- Bolsa Knolls
- Bolsa Verde
- Bombay
- Bombay Beach
- Bonadelle Ranchos
- Bonadelle Ranchos Five
- Bonadelle Ranchos Nine
- Bonadelle Ranchos-Madera Ranchos
- Bonanza Springs
- Bonds Corner
- Bonetti
- Bonilla
- Bonita, Madera County
- Bonita, San Diego County
- Bonnefoy
- Bonnie Bell
- Bonnie View
- Bonny Doon
- Bonsall
- Bontes (historical)
- Boonville
- Bootjack
- Borden
- Boron
- Boronda
- Borosolvay
- Borrego
- Borrego Springs
- Boston Heights
- Boston Ravine
- Bostonia
- Bothin (historical)
- Boulder Bay
- Boulder Creek
- Boulder Oaks, San Diego County
- Boulder Park
- Boulevard
- Boulevard Gardens
- Bouquet Junction
- Bowerbank
- Bowles
- Bowman
- Bowman Place
- Box Springs
- Boyers Landing
- Boyes Hot Springs
- Boyle Heights
- Boys Republic
- Bracken Brae
- Brackney
- Bradbury
- Bradley
- Bradys
- Bragur
- Brandon Corner
- Brandy City
- Branscomb
- Branson (historical)
- Brant
- Brawley
- Brazos
- Brea
- Brea Chem
- Bredehoft Place
- Brela
- Brents Junction
- Brentwood, Los Angeles County
- Brentwood, Contra Costa County
- Brentwood Heights
- Brentwood Park, Tuolumne County
- Brentwood Park, Los Angeles County
- Bret Harte
- Bretz Mill
- Briarpatch
- Briarwood Canyon
- Briceburg
- Bridgedale
- Bridgehaven
- Bridgehead
- Bridgeport, Mariposa County
- Bridgeport, Mono County
- Bridgeport, Nevada County
- Briggs Terrace
- Briggston (historical)
- Brighton
- Brightside
- Brisbane
- Brito
- Britona (historical)
- Broadmoor
- Broadmoor Village
- Broadwell
- Brockmans Corner
- Brockway
- Brockway Vista
- Broderick
- Bronco
- Bronge (historical)
- Brookdale
- Brookfield Manor Mobile Home Park
- Brookfield Village
- Brookhurst
- Brooklyn Heights, Los Angeles County
- Brooklyn Heights, San Diego County
- Brooks
- Brookshire
- Brookside Mobile Home Park
- Brooktrails
- Brookvale Terrace Mobile Home Park
- Brown
- Browning
- Browns (historical)
- Browns Corner
- Browns Flat
- Browns Valley
- Brownstone (historical)
- Brownsville
- Bruceville
- Brush (historical)
- Brush Creek
- Bryants
- Bryman
- Bryn Mawr
- Bryson
- Bryte
- Bryte Mobile Home Park
- Buchanan
- Buchli
- Buck Meadows
- Buckeye, El Dorado County
- Buckeye, Plumas County
- Buckeye Flat (historical)
- Buckhorn, Ventura County
- Buckhorn, Amador County
- Buckhorn Estates
- Buckingham Park
- Bucks Lake
- Bucks Lodge
- Bucktown
- Buellton
- Buena
- Buena Park
- Buena Vista, Amador County
- Buena Vista, Mariposa County
- Buena Vista, Santa Clara County
- Buena Vista, Sonoma County
- Buena Vista (historical) (Buena Vista Census Designated Place (historical))
- Buena Vista (historical)
- Buena Vista Mobile Home Park
- Buffalo Hill
- Buhach
- Bullard
- Bullards Bar (historical)
- Bumblebee
- Bummerville
- Bunker
- Bunker Hill, San Bernardino County
- Bunker Hill, Amador County
- Bunker Hill, Los Angeles County
- Burbank, Santa Clara County
- Burbank, Los Angeles County
- Burbank Junction
- Burbeck
- Burchell (historical)
- Burdell
- Burling (historical)
- Burlingame
- Burness
- Burney
- Burnham
- Burr
- Burrel
- Burson
- Burton Mill
- Bush
- Butano Park
- Butler
- Butler (historical)
- Butlers (historical)
- Butte City
- Butte House (historical)
- Butte Street Junction
- Butterfield Lake Estates
- Buttonwillow
- Byron
- Bystrom
- C-Road
- Cabazon
- Cabin Cove
- Cable
- Cabrillo Mobile Home Park
- Cabrillo Village
- Cachuma Village
- Cactus
- Cactus City
- Cadenasso
- Cadiz
- Cadwell
- Cahuilla
- Cahuilla Hills
- Cairns Corner
- Cajon
- Cajon Junction
- Cal-Ida
- Cal-ore Trail Mobile Estates
- Calabasas
- Calabasas Highlands
- Calada
- Calaveritas
- Calavo Gardens
- Calders Corner
- Caldor
- Caldwell (historical)
- Caldwell Pines
- Caleb (historical)
- Calexico
- Calexico Lodge
- Calflax
- Calgro
- Calico, Kern County
- Calico, San Bernardino County
- Caliente
- Caliente Sands
- Califa (historical)
- California City, Kern County
- California City,
- California Heights
- California Hot Springs
- California Mobile Home Park
- California Valley
- Calimesa
- Calimesa Mobile Home Ranch
- Calipatria
- Calistoga
- Calla
- Callender
- Calpack
- Calpella
- Calpine
- Calvada (historical)
- Calvada Springs
- Calwa
- Calzona
- Camanche (historical)
- Camanche North Shore (Camanche North Shore Census Designated Place)
- Camanche Village
- Camarillo
- Camarillo Mobile Estates
- Cambio (historical)
- Cambodia Town
- Cambria
- Cambria Pines
- Cambrian Park
- Cambridge Oaks
- Camden, Fresno County
- Camden, Sacramento County
- Camelot Hills
- Cameo
- Cameron, Kern County
- Cameron, Mendocino County
- Cameron Airpark Estates
- Cameron Corners
- Cameron Creek Colony
- Cameron Park
- Camerons Mobile Home Park
- Camino
- Camino Heights
- Camp Bartlett
- Camp Connell
- Camp Earnest
- Camp Eighteen
- Camp Evers
- Camp Meeker
- Camp Nelson
- Camp Owens
- Camp Pardee
- Camp Pendleton North
- Camp Pendleton South
- Camp Pendola
- Camp Richardson
- Camp Rose
- Camp Sierra
- Camp Spaulding
- Camp Thayer
- Campana
- Campbell
- Campbell Hot Springs
- Campbell Village
- Camphora
- Campland on the Bay Trailer Park
- Campo
- Campo Seco, Calaveras County
- Campo Seco, Tuolumne County
- Camptonville
- Camulos
- Cana
- Canebrake
- Canebrake (historical)
- Cannery Village Mobile Home Park
- Cannon
- Canoga Park
- Cantil
- Cantua Creek
- Canyon
- Canyon Acres
- Canyon City
- Canyon Country
- Canyon Crest Heights
- Canyon Crest Mobile Home Park
- Canyon Lake
- Canyon View
- Capay, Glenn County
- Capay, Yolo County
- Cape Horn, Alpine County
- Cape Horn, Mendocino County
- Cape Horn, Placer County
- Capistrano Beach
- Capistrano Terrace Mobile Home Park
- Capistrano Valley Mobile Home Estates
- Capital Hill
- Capitan
- Capitol City Recreational Vehicle and Mobile Home Park
- Capitola
- Capri Mobile Home Park
- Caravan Mobile Home Park
- Caravana Trailer Lodge
- Carbona
- Carbondale
- Carbondale (historical)
- Card Place
- Cardiff-by-the-Sea
- Carefree Mobile Village
- Carefree Ranch Mobile Home Park
- Carlsbad
- Carlsbad Trailer Park
- Carlton
- Carlton Hills
- Carmel Highlands
- Carmel Valley
- Carmel Valley Manor
- Carmel Valley Village
- Carmel-by-the-Sea
- Carmen City
- Carmenita
- Carmet
- Carmichael
- Carnadero
- Carnelian Bay
- Carnelian Heights
- Carneros (historical)
- Carpenter
- Carpenter Place
- Carpinteria
- Carquinez Heights
- Carr
- Carriage Mobile Home Estates
- Carrolton
- Carson
- Carson Hill
- Cartago
- Carthay Circle
- Carthay Square
- Caruthers
- Carvin Creek Homesites
- Casa Blanca
- Casa Conejo
- Casa de Amigos Mobile Home Park
- Casa de Lago Mobile Home Estates
- Casa de Oro
- Casa de Oro-Mount Helix
- Casa del Norte Mobile Home Community
- Casa Grande Estates Mobile Home Park
- Casa Grande Mobile Home Park
- Casa Hermosa Mobile Home Park
- Casa Loma, Placer County
- Casa Loma, Riverside County
- Casa Mia Mobile Home Park
- Casa Mobile Home Park
- Cascade
- Cascade Shores
- Cascade Sun Mobile Home Estates
- Cascadel Woods
- Casey Corner
- Casitas del Sol Mobile Home Park
- Casitas Mobile Home Park
- Casitas Springs
- Casmalia
- Caspar
- Castaic
- Castaic Junction
- Castellammare
- Castle Gardens
- Castle Mobile Estates
- Castle Park
- Castle Rock Springs
- Castlewood Mobile Home Park
- Castro
- Castro City
- Castro Valley
- Castroville
- Caswell
- Cathedral City
- Catheys Valley
- Catlett
- Cave City
- Cavin
- Cawelo
- Caymus (historical)
- Cayucos
- Cazadero
- Cecile
- Cedar Crest, Fresno County
- Cedar Crest, Nevada County
- Cedar Glen
- Cedar Grove, El Dorado County
- Cedar Grove, Fresno County
- Cedar Mill
- Cedar Pines Vista
- Cedar Ridge, Tuolumne County
- Cedar Ridge, Nevada County
- Cedar Rock Lodge
- Cedar Slope
- Cedar Springs
- Cedar Springs (historical)
- Cedar Vista
- Cedarbrook
- Cedarpines Park
- Cella
- Ceneda
- Centerville, Butte County
- Centerville, Fresno County
- Centerville (historical), Alpine County
- Centerville (historical), Sierra County
- Centerville District
- Central
- Central Berkeley
- Central Camp
- Central Sunset
- Central Valley (historical)
- Central Waterfront
- Centralia
- Century City
- Ceres
- Cerritos
- Cerro
- Cerro Villa Heights
- Chabot Terrace
- Chadbourne
- Chaffee
- Chalfant Valley
- Challenge
- Challenge-Brownsville
- Chamberlands Estates
- Chambers Lodge
- Chambless
- Champagne
- Champagne Fountain
- Champion (historical)
- Chandler (historical), Los Angeles County
- Chandler (historical), Sutter County
- Chandon (historical)
- Chaney Ranch
- Channel Islands Beach
- Chaparral Heights
- Chapman, Los Angeles County
- Chapman, Marin County
- Chapmantown
- Chappo
- Charleston (historical)
- Charleston Gardens
- Charleston Meadows
- Charter Oak
- Charter Oak Mobile Estates
- Chase
- Chases (historical)
- Chats (historical)
- Chatsworth
- Chatsworth Lake Manor
- Chemeketa Park
- Chemurgic
- Cherokee, Butte County
- Cherokee, Nevada County
- Cherokee, San Joaquin County
- Cherokee, Tuolumne County
- Cherokee Mobile Gardens
- Cherokee Strip
- Cherry (historical)
- Cherry Creek Acres
- Cherry Valley
- Cherryland
- Chester
- Chianti
- Chico
- Chilcoot
- Chilcoot-Vinton
- Chili Bar, Placerville
- China Basin
- China Gulch (historical)
- China Lake
- China Lake Acres
- Chinatown, Alameda County
- Chinatown, Mono County
- Chinatown, San Francisco County
- Chinatown (historical)
- Chinese Camp
- Chino
- Chino Hills
- Chipps
- Chiquita
- Chiriaco Summit
- Chittenden, San Benito County
- Chittenden, Santa Cruz County
- Chloride City (historical)
- Cholame
- Chollas Creek
- Chollas View
- Chorro
- Chowchilla
- Chrisman
- Christie
- Chrome
- Chrysopolis (historical)
- Chualar
- Chubbuck
- Chula Vista
- Churn Creek Mobile Home Park
- Cicero (historical)
- Cienega
- Cienega Seabreeze Mobile Home Park
- Cima
- Cimarron
- Cimarron Estates
- Cimarron Estates Mobile Home Park
- Cinco
- Cincotta
- Cisco
- Cisco Grove
- Citro
- Citrus, Los Angeles County
- Citrus, Sacramento County
- Citrus Gardens Mobile Home Park
- Citrus Heights
- Citrus View
- City Terrace
- Civic Center, San Francisco County
- Civic Center, Alameda County
- Clair
- Clairemont
- Claraville
- Clare Mill
- Claremont, Alameda County
- Claremont, Los Angeles County
- Clarendon Heights
- Claribel
- Clarksburg
- Clarksville
- Clarsona
- Claus
- Claussenius
- Clay
- Clayton, Contra Costa County
- Clayton, Placer County
- Clayton (historical)
- Clear Creek Mobile Home Park
- Clear Lake Keys
- Clear Lake Riviera
- Clearing House
- Clearlake
- Clearlake Highlands
- Clearlake Oaks
- Clearlake Park
- Clearwater
- Clement Junction
- Clements
- Clems (historical)
- Cleone
- Cliff Haven
- Clifton
- Cliftwood Mobile Home Park
- Clima
- Clint
- Clinton
- Clinton (historical)
- Clio
- Clipper Gap
- Clipper Mills
- Clotho
- Clover Flat
- Cloverdale
- Cloverleaf Canyon
- Clovis
- Clyde, Contra Costa County
- Clyde, Imperial County
- Coach Royal Trailer Park
- Coachella
- Coalinga
- Coarsegold
- Cobb
- Coburn
- Cochrane
- Cockatoo Grove
- Codora
- Coffing
- Cohasset
- Colache Town
- Cold Spring (historical)
- Cold Springs, El Dorado County
- Cold Springs, Tuolumne County
- Cole Valley
- Coleman
- Coleville
- Colfax
- Colfax Spring
- Colima
- Colina Vista
- College City
- College Heights, San Bernardino County
- College Heights, San Diego County
- College Park
- College Terrace
- Collegeville
- Collierville
- Collins
- Collins (historical), Fresno County
- Collins (historical), San Bernardino County
- Collinsville
- Colma
- Coloma
- Colonia Juarez
- Colonia Manzanilla
- Colton
- Columbia
- Columbia Village
- Colusa
- Colusa Junction
- Colusa Rancheria
- Cometa
- Commerce
- Community Center
- Como
- Comptche
- Compton
- Comstock Acres
- Comstock Ranch
- Conaway
- Concepcion
- Concord
- Concow
- Condemned Bar (historical)
- Conejo
- Conejo Valley Trailer Park
- Confederate Corners
- Confidence
- Conley (historical)
- Conner
- Constantia
- Continental Mobile Home Park
- Contra Costa Centre
- Coolidge Springs
- Coombs (historical)
- Cooper, Lake County
- Cooper, Monterey County
- Cooperstown
- Copeland
- Copper City, Glenn County
- Copper City, San Bernardino County
- Copper Cove Subdivision
- Copper Cove Village
- Copperopolis
- Corcoran
- Cordelia
- Cordelia Junction
- Cordero Junction
- Cordova
- Cornelius (historical)
- Cornell
- Corning
- Cornwall
- Cornwell (historical)
- Coromar
- Corona
- Corona (historical)
- Corona del Mar
- Coronado
- Coronado Gardens Mobile Home Park
- Coronado Heights (historical)
- Corporal
- Corral de Tierra
- Corralitos
- Corriganville
- Corte Madera
- Cortena
- Cortez
- Cory
- Coso
- Coso Junction
- Costa Mesa
- Costa Mesa Mobile Home Estates
- Cosumne
- Cosy Dell
- Cota
- Cotati
- Cotners Corner
- Coto De Caza
- Cottage Corners
- Cottage Gardens
- Cottage Springs
- Cotton Center
- Cottonwood, Yolo County
- Cottonwood, Shasta County
- Cottonwood Estates
- Coulterville
- Counsman
- Country Aire Mobile Home Park
- Country Club
- Country Club Mobile Estates
- Country Club Park
- Country Manor Estates
- Country Mobile Estates
- Country Road Estates
- Country Side Mobile Home Park
- Country Villa Estates
- Country Villa Estates Mobile Home Park
- Courtland
- Cove Mobile Villa
- Covelo
- Covina
- Cow Creek
- Cow Hollow
- Cowan Heights
- Cowell
- Cox
- Coyote
- Coyote Valley Rancheria (historical)
- Coyote Wells
- Coyoteville
- Cozzens Corner
- Crabtree
- Crafton
- Cragmont
- Craig
- Craig (historical)
- Cranmore
- Crater
- Creed
- Creekside, Monterey County
- Creekside, San Bernardino County
- Creekside Mobile Home Estates
- Crescent
- Crescent City
- Crescent City North
- Crescent Park
- Crescent Ridge Village
- Cressey
- Crest
- Crest Park
- Cresta
- Crestline
- Crestmore, Riverside County
- Crestmore, San Bernardino County
- Creston, Napa County
- Creston, San Luis Obispo County
- Crestview
- Crittendon (historical)
- Crocker Amazon
- Crocker Highlands
- Crocker Place
- Crockett
- Croft
- Crolona Heights
- Cromberg
- Crome
- Cromir
- Cronese Valley
- Cronise (historical)
- Cross Roads
- Crow (historical)
- Crowley
- Crowley Lake
- Crown
- Crown Jewel
- Crown Village
- Crows Landing
- Crucero
- Crystal Cove
- Crystal Falls
- Crystal Lake
- Crystal Springs (historical)
- Cuba (historical)
- Cubbler Place
- Cudahy
- Cuernavaca
- Cuesta Oaks
- Cuesta Park
- Cuesta Serena
- Cuesta-by-the-Sea
- Culver City
- Culver Garden
- Culver Junction
- Cummings
- Cuna Vista Mobile Home Park
- Cunard
- Cuneo (historical)
- Cunningham
- Cupertino
- Curlew
- Curry Village
- Curtis Creek Ranch
- Curtner
- Cushenbury
- Cushing
- Cutler
- Cutten
- Cuttings Wharf
- Cuyama
- Cuyamaca (historical)
- Cygnus
- Cypave
- Cypress
- Cypress Gardens Mobile Home Community
- Cypress Grove, Los Angeles County
- Cypress Grove, Marin County
- Cypress Hill
- Cypress Park
- Daggett
- Dagon
- Dairyland
- Daisie
- Daly City
- Dana Point
- Dana Point Marina Mobile Home Estates
- Dana Strand Village
- Danby
- Danielson
- Dantoni
- Danville
- Dardanelle
- Darlington
- Darrah
- Darwin
- Date City
- Daulton
- Daum (historical)
- Davenport
- Davenport Landing
- David (historical)
- Davis
- Davis Mobile Estates
- Dawes
- Dawson Place
- Day Valley
- Dayton
- Dayton Avenue
- De Anza Moon Valley Mobile Home Park
- De Anza Trailer Harbor
- De Anza Village
- De Luz
- De Luz Heights
- De Sabla
- Deadwood, Butte County
- Deadwood, Tuolumne County
- Deadwood (historical)
- Dean
- Dean Place
- Dearborn Park
- Death Valley Junction
- DeCamp
- Declez
- Declezville
- Deep Springs
- Deer Creek Colony
- Deer Creek Park
- Deer Crossing
- Deer Haven
- Deer Lake Highlands
- Deer Park, El Dorado County
- Deer Park, Napa County
- Deer View
- DeHaven
- Dehesa
- Del Aire
- Del Amo
- Del Cerro
- Del Cerro Mobile Home Estates
- Del Cielo Mobile Estates
- Del Dios
- Del Francia Mobile Estates
- Del Mar
- Del Mar Heights
- Del Monte
- Del Monte Forest
- Del Monte Heights
- Del Paso
- Del Paso Heights
- Del Prado Bolsa
- Del Prado Mobile Park Club
- Del Ray
- Del Ray Mobile Home Estates
- Del Rey
- Del Rey Oaks
- Del Rio
- Del Rio Woods
- Del Rosa
- Del Sur
- Del Valle
- Delaney (historical)
- Delano
- Delano Mobile Home Park
- Delevan
- Delft Colony
- Delhi
- Delleker
- Dells (historical)
- Delmonico Place
- Delphos
- Delta
- Deluxe Mobile Park
- DeLuz
- Democrat (historical)
- Democrat Hot Springs
- Denair
- Denman (historical)
- Dentens (historical)
- Denverton
- Derby Acres
- Des Moines
- DeSabla
- Descanso
- Descanso Junction
- Desert Beach
- Desert Camp
- Desert Center
- Desert Edge
- Desert Groves Mobile Home Park
- Desert Heights
- Desert Hills Trailer Park
- Desert Hot Springs
- Desert Knolls
- Desert Knolls Manor
- Desert Lake
- Desert Lodge
- Desert Relief (historical)
- Desert Sands Mobile Home Park
- Desert Shores
- Desert View
- Desert View Highlands
- Desert View Housing Area
- Devil Canyon
- Devils Elbow
- Devon
- Devonshire
- Devore
- Devore Heights
- Dew Drop
- Dew Drop (historical)
- Dewitt
- Di Giorgio
- Diablo
- Diablo Grande (Diablo Grande Census Designated Place)
- Diamond
- Diamond A Ranch Estates
- Diamond Bar
- Diamond Bar B Ranch
- Diamond Heights Village
- Diamond Springs
- Dickenson (historical)
- Dickerson (historical)
- Dillard
- Dillon (historical)
- Dillon Beach
- Dimond District
- Dinkey Creek
- Dinuba
- Dìpe (Dipe)
- Discovery Bay
- Ditch Camp Five
- Dixieland
- Dixon
- Dixon Lane-Meadow Creek
- Dobbins
- Doble
- Docas (historical)
- Dodge Place
- Dodgeland
- Doelger City
- Dog Town
- Doghouse Junction
- Dogpatch
- Dogtown, Glenn County
- Dogtown, Mariposa County
- Dogtown, San Joaquin County
- Dolanco Junction
- Dollar Point
- Dolley
- Dolomite
- Dolores
- Dominguez
- Dominguez Junction
- Don (historical)
- Donahue (historical)
- Donner
- Donner Lake Village
- Donner Pines Tract
- Donner Woods
- Dora Belle
- Dorado Mobile Home Park
- Dorr Place
- Dorrington
- Dorset Village
- Dos Cabezas
- Dos Palmas Corners
- Dos Palos
- Dos Palos Y
- Dos Rios
- Douds Landing
- Dougherty, Alameda County
- Dougherty, San Joaquin County
- Douglas Flat
- Douglas Junction
- Dove (historical)
- Dove Canyon
- Dow
- Downey
- Downey Road
- Downieville
- Downtown
- Dozier
- Drake
- Drawbridge (historical)
- Dresser
- Driftwood Mobile Home Park
- Drum (historical)
- Drytown
- Duarte
- Dublin
- Duboce Triangle
- Ducor
- Dudmore
- Dufour
- Dugan
- Dulah
- Dulzura
- Dumont (historical)
- Dunbarton (historical)
- Duncan Corners
- Duncan Springs
- Duncans Mills
- Dunderberg Mill
- Dunes
- Dunlap
- Dunlap (historical)
- Dunlap Acres
- Dunlap Place
- Dunmovin
- Dunn
- Dunneville
- Dunnigan
- Dunnigan Mobile Home Park
- Dunsmuir
- Durham
- Duri (historical)
- Durmid
- Dustin Acres
- Dutch Flat
- Dutch Village
- Dutton
- Duveneck
- Dyer
- Eads (historical)
- Eagle Bird (historical)
- Eagle Mountain
- Eagle Ranch
- Eagle Rock
- Eagle Tree
- Eagles Nest
- Eaglet (historical)
- Eagleville
- Eaires (historical)
- Earlimart
- Earp
- East Arboga
- East Arcadia
- East Bakersfield
- East Biggs
- East Blythe, Riverside County
- East Colton Heights
- East Farmersville
- East Foothills
- East Garrison
- East Gridley
- East Hemet
- East Highlands
- East Irvine
- East La Mirada
- East Los Angeles
- East Nicolaus
- East Oakdale
- East Orosi
- East Palo Alto
- East Pasadena
- East Petaluma
- East Pleasanton
- East Porterville
- East Quincy
- East Rancho Dominguez
- East Richmond
- East Richmond Heights
- East Sacramento
- East San Diego
- East San Gabriel
- East Side
- East Sonora
- East Tulare Villa (East Tulare Villa Census Designated Place)
- East Village
- East Whittier
- East Windsor
- Easter Cross
- Easter Hill Village
- Eastlake
- Eastlake (historical)
- Eastlake Greens
- Eastmont, Alameda County
- Eastmont, Los Angeles County
- Easton
- Easton Place
- Eastport
- Eastvale
- Ebbetts Pass Highlands
- Ebbtide Mobile Home Park
- Eberly
- Echo
- Echo Lake
- Echo Park, Los Angeles County
- Echo Ridge Estates
- Echo Ridge Trails
- Eckley
- Eden
- Eden Gardens
- Eden Hot Springs
- Eden Valley
- Edendale
- Edendale (historical), Merced County
- Edendale (historical), Los Angeles County
- Edenvale
- Eder
- Edgar
- Edgemar
- Edgemont
- Edison
- Edmanton (historical)
- Edmiston
- Edmundson Acres
- Edna
- Edom
- Edwards
- Edwards Air Force Base
- Edwin
- Egan
- El Bonita
- El Cajon
- El Camino 76 Trailer Park
- El Campo
- El Capitan (historical)
- El Capitan Village Mobile Home Park
- El Casco
- El Centro
- El Cerrito, Riverside County
- El Cerrito, Contra Costa County
- El Cerrito Mobile Home Park
- El Dorada Mobile Estates
- El Dorado
- El Dorado Hills
- El Dorado Mobile Home Park
- El Encano Heights
- El Granada
- El Granada Mobile Home Park
- El Macero
- El Merrie Dell
- El Mirador
- El Mirage
- El Modena
- El Monte
- El Morro Beach Trailer Park (historical)
- El Nido, Los Angeles County
- El Nido, Merced County
- El Nido Mobile Home Estates
- El Nido Mobile Home Estates (historical)
- El Pinal
- El Portal
- El Prado (historical)
- El Rancho (El Rancho Census Designated Place)
- El Rancho Mobile Home Park, Los Angeles County
- El Rancho Mobile Home Park, San Diego County
- El Rancho Mobile Park
- El Rio
- El Rio Estates
- El Rio Villa
- El Rita
- El Roble
- El Segundo
- El Sereno
- El Sereno Estates Mobile Home Park
- El Sobrante
- El Sueno
- El Toro
- El Toro Mobile Home Estates
- El Verano
- Elayon
- Elba
- Elders Corner
- Elderwood
- Eldorado Mobile Home Estates
- Eldridge
- Eldton
- Electra
- Elfin Forest
- Elftman
- Elk, Fresno County
- Elk, Mendocino County
- Elk Creek
- Elk Grove
- Elkhorn
- Ellicott
- Elliot (historical)
- Elliott (historical)
- Elliott Corner
- Ellis
- Ellis (historical)
- Ellis Place
- Ellwood
- Ellwood Estates
- Elm View
- Elmco
- Elmhurst
- Elmira
- Elmo
- Elmore Desert Ranch
- Elna (historical)
- Elora
- Elsa
- Elsey
- Elvas
- Elvaton (historical)
- Elverta
- Elvira
- Ely (historical)
- Embarcadero, Sonoma County
- Embarcadero,
- Embarcadero Oaks
- Emerald Bay, El Dorado County
- Emerald Bay, Orange County
- Emerald Hills
- Emerald Isle Mobile Home Park
- Emerald Lake
- Emerald Lake Hills
- Emeryville
- Emigrant Gap
- Emmaton
- Empire
- Empire (historical), Contra Costa County
- Empire (historical), Mendocino County
- Encanto
- Enchanted Hills
- Encinal
- Encinitas
- Encino
- Engineer Springs
- English Bar (historical)
- English Town
- Eniwetok Housing Area
- Ennis
- Ensign (historical)
- Ensley
- Enson
- Enterprise, Amador County
- Enterprise, Lake County
- Enterprise (historical)
- Enterprise Mobile Park
- Epworth
- Equestrian Village
- Eric (historical)
- Erle (historical)
- Escalle
- Escalon
- Escondido
- Escondido Junction
- Escondido Terrace Mobile Home Park
- Eshel (historical)
- Eskini (historical)
- Esmar (historical)
- Esparto
- Esperanza
- Esquon
- Essex
- Estelle
- Estrella
- Etheda Springs
- Etiwa (historical)
- Etiwanda
- Ettawa Springs
- Eucalyptus Hills
- Eugene
- Eureka
- Eureka (historical)
- Evelyn
- Everglade
- Evergreen
- Evergreen (historical)
- Evergreen Estates
- Evergreen Park
- Ewing
- Excelsior
- Exeter
- Fagan
- Fair Oaks, Mendocino County
- Fair Oaks, San Joaquin County
- Fair Oaks, San Mateo County
- Fair Oaks, Sacramento County
- Fair Play
- Fairbanks
- Fairbanks Ranch
- Fairfax
- Fairfield
- Fairmead
- Fairoaks
- Fairoaks Bridge (historical)
- Fairview, Alameda County
- Fairview, Tulare County
- Fairview, Ventura County
- Fairview Mobile Home Estates
- Fairville
- Fairway Acres
- Fairway Oaks Mobile Home Park
- Fairway Park
- Fales Hot Springs
- Fallbrook, Sacramento County
- Fallbrook, San Diego County
- Fallbrook Junction
- Fallen Leaf
- Falling Springs (historical)
- Fallon
- Famoso
- Fane
- Fargo (historical)
- Faria
- Farley
- Farley (historical)
- Farm Hills
- Farmersville
- Farmington
- Farr
- Farwell
- Fawnskin
- Fayette
- Feather Falls
- Feather River Inn
- Feather River Park
- Felice (historical)
- Felicity
- Felix
- Fellows
- Felton
- Felton Gables
- Femmons
- Fenner
- Fep (historical)
- Fergus
- Fern Ann Falls
- Fern Valley
- Fernbrook
- Ferndale
- Fernside
- Fernwood
- Fernwood Mobile Home Park
- Ferrum
- Fetters Hot Springs
- Fetters Hot Springs-Agua Caliente
- Fiddlers Green
- Fiddletown
- Fiesta Shores
- Fig Orchard
- Figarden
- Fillmore
- Financial District
- Fine Gold
- Finley
- Firebaugh
- Firebrick
- Firestone Park
- Fish Camp
- Fish Rock
- Fish Springs
- Fishel
- Fisher Place
- Fishermans Wharf
- Five Brooks
- Five Corners
- Five Mile Terrace
- Five Points, Fresno County
- Five Points, Kern County
- Five Points, Los Angeles County
- Five Points, Plumas County
- Five Points, San Diego County
- Five Points, Solano County
- Fizzben Heights
- Flamingo Heights
- Flat Ravine (historical)
- Flea Valley (historical)
- Fleetridge
- Fleta
- Flinn Springs
- Flonellis
- Florence
- Florence-Graham
- Florin
- Floriston
- Flosden (historical)
- Flosden Acres
- Flournoy
- Floyd
- Fluhr
- Fluhr (historical)
- Flumeville
- Fly-In Acres
- Folsom
- Folsom Junction
- Fondo
- Fontana
- Fontenay Villa
- Foothill Estates
- Foothill Farms
- Foothill Ranch
- Foothill Ranch (historical) (Foothill Ranch Census Designated Place (historical))
- Foothills of San Marcos Mobile Home Park
- Foppiano
- Forbes (historical)
- Forbestown
- Ford City
- Forebay
- Forest
- Forest Falls
- Forest Hill
- Forest Hills
- Forest Home (historical)
- Forest Knolls, Marin County
- Forest Knolls, Nevada County
- Forest Knolls, San Francisco County
- Forest Lake
- Forest Meadows
- Forest Park, Los Angeles County
- Forest Park, Santa Cruz County
- Forest Ranch
- Forest Spring (historical)
- Forest Springs
- Foresta
- Foresthill
- Forestville
- Fornis
- Fort Bragg
- Fort Camp (historical)
- Fort Irwin
- Fort Jones
- Fort Mason
- Fort McDowell
- Fort Miller (historical)
- Fort Ord Village (historical)
- Fort Piute (historical)
- Fort Romie
- Fort Roosevelt
- Fort Rosecrans
- Fort Winfield Scott
- Fortuna
- Foster
- Foster Bar (historical)
- Foster City
- Foster Park
- Fountain Place
- Fountain Springs
- Fountain Valley
- Fountain Valley Mobile Home Estates
- Four Acres
- Four Corners, Contra Costa County
- Four Corners, San Diego County
- Four Corners, Sonoma County
- Four Pines
- Four Points
- Four Seasons Mobile And Recreational Vehicle Park
- Fourth Crossing
- Fouts Springs
- Fowler
- Foxwood
- Fram (historical)
- Frances
- Franciscan Mobile Home Park
- Franciscan Village, El Dorado County
- Franciscan Village, Santa Barbara County
- Franklin
- Frazier Park
- Fraziers Landing
- Freda
- Fredalba
- Fredericks
- Fredericksburg
- Freedom
- Freeport
- Freestone
- Fremont, San Bernardino County
- Fremont, Yolo County
- Fremont, Alameda County
- French Camp
- French Corral
- Frenches Ravine (historical)
- Frenchtown, El Dorado County
- Frenchtown, Yuba County
- Fresh Pond
- Fresno
- Fresno Beach (historical)
- Fresno City (historical)
- Fresno Crossing
- Friant
- Friendly Hills
- Friendly Hills Manor Mobile Home Park
- Friendly Village Mobile Home Park
- Friendly Village of Anaheim
- Friendship Village
- Frink
- Frost
- Frosts (historical)
- Fruitdale, San Diego County
- Fruitdale, Santa Clara County
- Fruitridge Manor
- Fruitridge Pocket (Fruitridge Pocket Census Designated Place)
- Fruitvale, Kern County
- Fruitvale, Alameda County
- Fruto
- Fuchs
- Fuller
- Fuller Acres
- Fuller Park
- Fullerton
- Fulton
- Fulton Wells
- Furnace (historical)
- Furnace Creek
- Gabilan (historical)
- Gabilan Acres
- Gadwall (historical)
- Gage
- Gale
- Galena Hill (historical)
- Galivan
- Gallaway
- Gallinas
- Galt
- Ganns
- Garden Acres
- Garden Acres Mobile Home Park
- Garden City Trailer Court
- Garden Court Mobile Home Village
- Garden Farms
- Garden Grove
- Garden Park
- Garden Valley
- Garden Valley (historical)
- Gardena
- Gardenland
- Gardners Trailer Park
- Garey
- Garlock
- Garnet
- Garnsey
- Garvanza
- Gaspur (historical)
- Gaston
- Gate Place
- Gateley
- Gateway
- Gato
- Gavilan Hills
- Gaviota
- Gelatt
- Gemco
- Gemello
- Genes Mobile Home Park
- Genevra
- George
- Georgetown
- Gepford
- Gerber
- Geyserville
- Giant
- Giant Oak (historical)
- Gibbs Ranch
- Gibsonville
- Giffen Cantua Ranch
- Gilberts, El Dorado County
- Gilberts, Placer County
- Gillete
- Gillis
- Gilman Hot Springs
- Gilroy
- Glamis
- Glassell Park
- Glen Arbor
- Glen Avon
- Glen Ellen
- Glen Frazer
- Glen Martin
- Glen Oaks
- Glen Park
- Glen Valley
- Glenblair
- Glenborough
- Glenbrook, Lake County
- Glenbrook, Nevada County
- Glencoe
- Glencove
- Glendale
- Glendale Junction
- Glendora
- Glenhaven
- Glenn
- Glennville
- Glenoak Hills
- Glenoaks Country
- Glenridge
- Glenridge Park
- Glenview, Lake County
- Glenview, Los Angeles County
- Glenview, San Diego County
- Glenwood
- Glenwood Mobile Estates
- Globe
- Glorietta, Contra Costa County
- Glorietta, Fresno County
- Gloster
- Goat Rock
- Goffs
- Goforth Mobile Home Village
- Goggins
- Goggins (historical)
- Gold Hill, Placer County
- Gold Hill, El Dorado County
- Gold Lake (historical)
- Gold Mine Hill
- Gold Mountain (Gold Mountain Census Designated Place)
- Gold Ridge
- Gold River
- Gold Run
- Gold Star Mobile Home
- Gold Town (historical)
- Gold Trail Park
- Goldcrest Mobile Home Club
- Golden Chain Mobile Home Park
- Golden Gate Heights
- Golden Hill
- Golden Hills
- Golden Mesa
- Golden Oaks Mobile Estates
- Golden Oaks Mobile Home Park
- Golden Skies Mobile Home Park
- Golden Torch Trailer Park
- Golden Valley Acres
- Golden Wheeler Mobile Home Park
- Goldleaf
- Goldmont Forest
- Goldstone
- Goldtree
- Goler Heights
- Goleta
- Golf (historical)
- Gonzales
- Good Hope
- Good Meadow
- Goodale
- Goodmans Corner
- Goodmill
- Goodyears Bar
- Gorda
- Gordola
- Gordon
- Gorman
- Gosford
- Goshen
- Governors Village
- Grabtown
- Grace
- Graeagle
- Graham
- Graham (historical)
- Graino
- Granada Hills
- Grand Island
- Grand Lake
- Grand Terrace
- Grande Mobile Manor Mobile Home Park
- Grandview
- Grangeville
- Granite Bay
- Granite Hills
- Granite Springs
- Graniteville
- Grant, Inyo County
- Grant, Sonoma County
- Grant Grove Village
- Grant Hill
- Grantville
- Granz (historical)
- Grapeland
- Grapeland (historical)
- Grapevine
- Grapit
- Grass Flat
- Grass Valley
- Graton
- Gravenstein
- Gravesboro
- Grayson
- Greekstore (historical)
- Greeley Hill
- Green
- Green Acres, Riverside County
- Green Acres, Santa Clara County
- Green Lantern Village
- Green Springs Ranch
- Green Springs Valley
- Green Tree Estates Mobile Home Park
- Green Valley, Los Angeles County
- Green Valley, Solano County
- Green Valley, San Diego County
- Green Valley Acres
- Green Valley Lake
- Green Valley Mobile Estates
- Green Valley Mobile Home Park
- Greenacres
- Greenbrae
- Greenbrier Mobile Home Park
- Greencrest Park Mobile Home Park
- Greendale
- Greenfield, Kern County
- Greenfield, Monterey County
- Greenhorn
- Greenleaf Mobile Home Park
- Greenley Oaks
- Greenmeadow
- Greensport
- Greenspot (historical)
- Greentree East
- Greenville, Yuba County
- Greenville, Plumas County
- Greenville (historical)
- Greenwater (historical)
- Greenwich Village
- Greenwood, El Dorado County
- Greenwood, Glenn County
- Greenwood (historical)
- Gregg
- Grey Rocks (historical)
- Greystone (historical)
- Gridley
- Gridley Colony Number One (historical)
- Gridley Colony Number Two (historical)
- Griffin Place
- Grimes
- Griminger
- Grizzly Flat
- Grizzly Gulch (historical)
- Grizzly Peak
- Grizzly Ridge
- Grossmont
- Grove
- Grove Mobile Home Park
- Groveland
- Groveland-Big Oak Flat (historical)
- Grover Beach
- Grub Gulch (historical)
- Guadalcanal Village
- Guadalupe
- Guadalupe (historical)
- Gualala
- Guasti
- Guatay
- Guenoc (historical)
- Guerneville
- Guernewood
- Guernsey
- Guernsey Mill
- Guild
- Guinda
- Gum
- Gustine
- Gypsite
- Gypsum (historical)
- Hacienda
- Hacienda Carmel
- Hacienda del Florasol
- Hacienda Heights
- Hacienda Mobile Home Park, Alameda County
- Hacienda Mobile Home Park, Orange County
- Hacienda Village
- Hacienda Village (subdivision)
- Hagginwood
- Haight
- Haight-Ashbury
- Haines
- Haiwee
- Halcon
- Halcyon
- Hale Place
- Hales Grove
- Haleys Trailer Ranch
- Half Moon Bay
- Halfway House
- Hall Station
- Hallelujah Junction
- Halley (historical)
- Halloran Springs
- Halls Corner
- Halvern
- Hamblin
- Hamburg Farms
- Hamilton City
- Hamlet
- Hammil
- Hammond, Fresno County
- Hammond, Tulare County
- Hammond Ranch
- Hammonton
- Hams
- Hancock Park
- Hanford
- Hanford Del Arroyo Estates
- Hanford Hill
- Hansen
- Happy Camp
- Happy Hill
- Happy Valley, Calaveras County
- Happy Valley, El Dorado County
- Happy Valley, Los Angeles County
- Harbin Springs
- Harbin Springs Annex
- Harbine (historical)
- Harbison Canyon
- Harbor City
- Harbor Hills
- Harbor Mobile Home Park
- Harbor Point
- Harbor Side
- Harden Flat
- Hardin (historical)
- Hardwick
- Hardy
- Hardy Place
- Harlem
- Harlem Springs
- Harmony, San Luis Obispo County
- Harmony, Tulare County
- Harmony Acres
- Harmony Grove
- Harold, Palmdale
- Harp
- Harpertown
- Harrington
- Harrisburg
- Harrison Park
- Harry Floyd Terrace
- Hart
- Hartland
- Hartley
- Harts Place
- Harvard
- Harvard Heights
- Haselbusch (historical)
- Haskell Creek Homesites
- Hasset (historical)
- Hatch
- Hathaway Pines
- Hathaway Place
- Hathaways Mountain Pines
- Havasu Palms
- Havenscourt
- Havilah
- Hawaiian Gardens
- Hawaiian Village Mobile Home Park
- Hawes
- Hawes (historical)
- Hawk Ravine (historical)
- Hawkins (historical)
- Hawley
- Hawthorne
- Hayes
- Hayes Valley
- Hayfield
- Hayfork
- Hays Place
- Haystack
- Hayward, Mariposa County
- Hayward, Alameda County
- Hayward Highland
- Hayward Park
- Hazelton
- Healdsburg
- Hearst
- Heart Bar Campground
- Heath Place
- Heather Glen
- Heavenly Hills
- Heber
- Hebron (historical)
- Hector
- Heeser Addition
- Heinlenville (historical)
- Helendale
- Hellhole Palms
- Helltown
- Helm
- Helm Corner
- Hemet
- Henderson
- Henderson Village
- Hendy Grove
- Henleyville
- Henry
- Henshaw
- Herald
- Hercules
- Heritage Mobile Home Park
- Hermosa Beach
- Hermosillo
- Herndon
- Herpoco
- Hershey
- Hesperia
- Hess Mill
- Hessel
- Hetch Hetchy Junction
- Hewes Park
- Hewitt
- Hi Vista
- Hickman
- Hickok Ranch
- Hickson
- Hicksville
- Hidden Hills
- Hidden Meadows
- Hidden Palms
- Hidden River
- Hidden Springs
- Hidden Trails
- Hidden Vale Mobile Home Park
- Hidden Valley, El Dorado County
- Hidden Valley, Placer County
- Hidden Valley Lake
- Hideaway Mobile Estates
- Higby
- Higgins Corner
- High Acres Haciendas
- High Country
- High Sierra Park
- Highcroft
- Highgrove
- Highland
- Highland (historical)
- Highland Park, Los Angeles County
- Highland Park, Nevada County
- Highland Park, Sacramento County
- Highland Park, Alameda County
- Highland Plams Mobile Home Park
- Highland Springs, Lake County
- Highland Springs, Riverside County
- Highland Village
- Highlands
- Highlands Mobile Home Park, Inyo County
- Highlands Mobile Home Park, San Diego County
- Highlands-Baywood Park
- Hights Corner
- Highway City
- Highway Highlands
- Hilarita
- Hildreth
- Hillcrest
- Hillgrove
- Hillmaid
- Hills Ferry
- Hills Flat
- Hillsborough
- Hillsborough Park
- Hillsdale, San Diego County
- Hillsdale, San Mateo County
- Hillside (historical)
- Hilmar
- Hilmar-Irwin
- Hilton
- Hinda
- Hinkley
- Hinsdale
- Hinton
- Hirschdale
- Hite Cove
- Hobart
- Hobart Mills
- Hobergs
- Hodge
- Hodson (historical)
- Hoff (historical)
- Hoffman Point
- Holcomb Village
- Holden (historical)
- Holiday Home Mobile Home Park
- Holland Summit (historical)
- Hollis
- Hollister
- Hollydale, Los Angeles County
- Hollydale, Sonoma County
- Hollywood
- Hollywood Beach
- Hollywood by the Sea
- Hollywood Heights
- Hollywood Riviera
- Holt
- Holton (historical)
- Holtville
- Holy City
- Home Garden
- Home Gardens
- Home Junction
- Homeland
- Homelands
- Homer
- Homestead Valley
- Homewood
- Homewood Canyon-Valley Wells
- Honby
- Honcut
- Honda
- Hood
- Hood Junction
- Hookston
- Hooper (historical)
- Hoosier Trailer Court
- Hope (historical)
- Hope Ranch
- Hopeton
- Hopland
- Hopyard (historical)
- Horizon Hills Mobile Home Park
- Hornitos
- Horstville
- Hough Springs
- Houghton Place
- Houze Place
- Hovley
- Howard Landing
- Howard Mill (historical)
- Howard Springs
- Howell Mountain
- Howell Place
- Howland Flat
- Huasna
- Hub
- Hubert Place
- Hudner
- Hughes Mill
- Hughes Place
- Hughson
- Hulburd Grove
- Humboldt Hill
- Hume
- Hume (historical)
- Hume Station
- Humphreys
- Hunter-Liggett
- Hunters Point
- Huntington Beach
- Huntington Harbor Mobile Home Park
- Huntington Harbour
- Huntington Lake
- Huntington Mobile Home Estates
- Huntington Park
- Huntington Shorecliffs Mobile Home Park
- Huntley
- Hunts Hill (historical)
- Hurlbut
- Hurleton
- Huron
- Hutt
- Hyde Park
- Hyde Park Mobile Home Estates
- Hydesville
- Hydril
- Hyperion (historical)
- Ibis
- Iceland
- Ideal Mobile Home Park
- Idle Wheel Mobile Estates
- Idlewild, Placer County
- Idlewild, Tulare County
- Idria
- Idyllwild
- Idyllwild-Pine Cove
- Ignacio
- Illinoistown (historical)
- Ilmon
- Imhoff
- Imola
- Imperial
- Imperial Beach
- Imperial Courts
- Imperial Escondido Estates Mobile Home Park
- Inca
- Inceville
- Incline
- Indak (historical)
- Independence
- Independence, Rail Rd Flat
- Indian Creek
- Indian Creek Trailer Park
- Indian Gulch
- Indian Hill (historical)
- Indian Hills
- Indian Lakes Estates
- Indian Oaks
- Indian Springs, Los Angeles County
- Indian Springs, Madera County
- Indian Springs, Mendocino County
- Indian Springs, San Diego County
- Indian Village
- Indian Wells, Kern County
- Indian Wells, Riverside County
- Indian Wells Mobile Home Park
- Indio
- Indio Hills
- Industry
- Ingle
- Inglenook
- Ingleside
- Ingleside Heights
- Ingleside Terrace
- Inglewood
- Ingomar
- Ingram
- Inmans (historical)
- Inner Parkside
- Inner Sunset
- Inperial Gables
- Inskip
- Inspiration Point North, San Diego
- Interlaken
- Inverness
- Inverness Park
- Inyokern
- Ione
- Iowa City
- Iowa Hill
- Iremel
- Iris
- Irish Town
- Irishtown (historical)
- Irma
- Irmulco
- Iron Horse
- Ironsides
- Irrigosa
- Irvine
- Irwin
- Irwindale
- Isabella (historical)
- Isaiah (historical)
- Isla Vista
- Island View Trailer Park
- Isleton
- Italian Swiss Colony
- Ivanhoe
- Ivanpah
- Iverson Indian Rancheria
- Ivesta
- Ivory
- Ivy del Mobile Home Park
- J Diamond Trailer and Recreational Vehicle Park
- Jacinto
- Jacksnipe
- Jackson
- Jackson Park
- Jacobs Corner
- Jacobsen (historical)
- Jacumba Hot Springs
- Jalama
- Jalama (historical)
- Jamacha
- Jamacha Junction
- James
- Jamesan
- Jamesburg
- Jamestown
- Jamison (historical)
- Jamul
- Jamul Indian Village
- Janesville
- Japantown
- Jarvis Landing
- Jasmin
- Jastro
- Java
- Jayhawk
- Jefferson
- Jefferson Park
- Jenks Place
- Jenner
- Jenny Lind
- Jerseydale
- Jesbel (historical)
- Jesmond Dene
- Jesus Maria
- Jet
- Jewell
- Jim Leggett Place
- Jimgrey
- Jimtown
- Joes Landing
- Joesphine
- Jofegan
- Johannesburg
- Johnson Corner
- Johnsondale
- Johnston Corner
- Johnstons Corner
- Johnstonville
- Johnstown
- Johnsville
- Johnsville Mobile Home Park
- Jolon
- Jonata Park
- Jones Bar (historical)
- Jones Corner
- Jones Place
- Jordan Downs
- Jordan Park
- Joshua
- Joshua Tree
- Jovista
- Juan
- Julian
- Junction Camp
- Junction House, Nevada County
- Junction House, Butte County
- Junction Ranch
- June Lake
- June Lake Junction
- Juniper Hills
- Juniper Springs
- Jupiter
- Kaci-badon (historical)
- Kadota
- Kagel Canyon
- Kaiser
- Kanawyers
- Kane Spring
- Karnak
- Katella Mobile Home Estates
- Kathryn
- Kaweah
- Kayandee
- Kearsarge
- Kecks Corner
- Keeler
- Keenbrook
- Keene
- Keith
- Keller Place
- Kellogg
- Kelsey
- Kelseyville
- Ken Mar Gardens Mobile Home Park
- Kennedy
- Kennedy Meadow
- Kenny
- Kensington
- Kensington Gardens
- Kent Woodlands
- Kentfield
- Kenton Mill
- Kentwood-In-The-Pines
- Kenwood
- Kenwood Estates
- Keough Hot Springs
- Kerby (historical)
- Kerman
- Kern
- Kern City
- Kern Lake
- Kernell
- Kernville
- Kernville (historical)
- Kester
- Keswick Dam Trailer Park
- Kettleman
- Kettleman City
- Kettleman Station
- Kevet
- Keyes
- Keyesville
- Keystone, Los Angeles County
- Keystone, Tuolumne County
- Kibesillah
- Kiesel
- Kilaga Springs
- Kilkare Woods
- Kilowatt
- Kimball
- Kimballville (historical)
- Kimberly Gardens Mobile Home Park
- Kimble (historical)
- Kincaid
- King (historical)
- King City
- King Farms
- Kings Beach
- Kings Mobile Home Estates
- Kingsburg
- Kingston (historical)
- Kingsville
- Kingswood Estates
- Kingvale
- Kinneloa Mesa
- Kirkville
- Kirkwood, Alpine County
- Kirkwood, Glenn County
- Kismet
- Kister
- Kit Carson
- Kiva Beach
- Klau
- Klinefelter
- Klondike
- Knights Ferry
- Knights Landing
- Knightsen
- Knowles
- Knowles Corner
- Knowles Junction
- Knoxville
- Kobe (historical)
- Koloma (historical)
- Komandorski Village
- Kona Kai Mobile Home Park
- Korbel
- Koreatown
- Kramer
- Kramer Hills
- Kramer Junction
- Kres
- Krug
- Kunuqug (historical)
- Kurand (historical)
- Kyan (historical)
- Kyburz
- La Barr Meadows
- La Belle Fontane Estates
- La Bolsa
- La Branza (historical)
- La Brea
- La Cañada Flintridge (La Canada Flintridge)
- La Conchita
- La Costa
- La Crescenta
- La Crescenta-Montrose
- La Cresta, Riverside County
- La Cresta, San Diego County
- La Cresta Highlands
- La Cresta Village
- La Cuesta Fontana
- La Delta
- La Fetra
- La Fresa
- La Grange
- La Habra
- La Habra Heights
- La Honda
- La Honda Park
- La Jolla, Orange County
- La Jolla, San Diego County
- La Jolla Amago
- La Jolla Hermosa
- La Jolla Ranch
- La Jolla Shores
- La Loma Park
- La Maria Mobile Home Park
- La Mesa
- La Mirada
- La Paco
- La Palma
- La Paloma
- La Panza
- La Patera
- La Playa
- La Porte
- La Presa
- La Puente
- La Quinta, Los Angeles County
- La Quinta, Riverside County
- La Riviera
- La Rose (historical)
- La Salle
- La Selva Beach
- La Sierra
- La Sierra Heights
- La Verne
- La Vina
- Lacjac
- Lackey Place
- Lacresta (historical)
- Lacto (historical)
- Ladera
- Ladera Heights
- Ladera Ranch
- Ladrillo (historical)
- Lafayette
- Lafayette Square
- Lagol
- Laguna, Los Angeles County
- Laguna, Sacramento County
- Laguna (historical) (Laguna Census Designated Place (historical))
- Laguna Beach
- Laguna Heights
- Laguna Hills
- Laguna Hills Mobile Home Estates
- Laguna Junction
- Laguna Niguel
- Laguna Terace Mobile Home Park
- Laguna Vista Trailer Park
- Laguna West
- Laguna West-Lakeside (historical) (Laguna West-Lakeside Census Designated Place (historical))
- Laguna Woods
- Lagunitas
- Lagunitas-Forest Knolls
- Lairds Corner
- Lairds Landing
- Lairport
- Lake Almanor Country Club
- Lake Almanor Peninsula
- Lake Alpine
- Lake Arrowhead
- Lake Balboa
- Lake Bernardo Estates Mobile Home Park
- Lake Camanche Ranches
- Lake City
- Lake Crest Estates
- Lake Davis
- Lake District
- Lake Elsinore
- Lake Forest, Orange County
- Lake Forest, Placer County
- Lake Hills Estates
- Lake Hughes
- Lake Isabella
- Lake Los Angeles
- Lake Madera Country Estates
- Lake Mary
- Lake Nacimiento
- Lake of the Pines
- Lake of the Woods
- Lake Park Santa Ana
- Lake San Marcos
- Lake Tamarisk
- Lake Valley
- Lake View Terrace
- Lake Village
- Lake Wildwood
- Lakeland Village
- Lakemont Pines
- Lakeport
- Lakeridge Oaks
- Lakeshore, Fresno County
- Lakeshore, Placer County
- Lakeside, San Diego County
- Lakeside, San Francisco County
- Lakeside, Alameda County
- Lakeside Farms
- Lakeside Park
- Lakeside Terrace
- Lakeview, Kern County
- Lakeview, Los Angeles County
- Lakeview, Nevada County
- Lakeview, Riverside County
- Lakeview, San Diego County
- Lakeview Hot Springs
- Lakeview Mobile Home Park
- Lakeville
- Lakewood
- Lakewood Highlands
- Lakewood Park
- Lakewood Sierra
- Lamanda Park
- Lambert (historical)
- Lambert Lake Estates
- Lamont
- LaMoree Mobile Estates
- Lamplighter Mobile Home Park
- Lanaki Lane Mobile Home Park
- Lanare
- Lancaster
- Lancha Plana (historical)
- Land (historical)
- Landco
- Lander Crossing
- Landers
- Lane
- Lane Mill (historical)
- Lane Redwood Flat (historical)
- Lanfair
- Lang
- Langs (historical)
- Lankershim (historical)
- Larchmont Village
- Largo
- Largo Vista
- Larkfield
- Larkfield-Wikiup
- Larkin Valley
- Larkmead
- Larkspur
- Larson
- Las Cantilles
- Las Colinas Mobile Home Park
- Las Cruces
- Las Flores, Los Angeles County
- Las Flores, Orange County
- Las Flores, San Diego County
- Las Gallinas
- Las Juntas
- Las Lomas, Los Angeles County
- Las Lomas, Monterey County
- Las Lomas, Sonoma County
- Las Palmas
- Las Plumas (historical)
- Las Uvas (historical)
- Lasslys (historical)
- Last Chance
- Lathrop
- Laton
- Latrobe
- Laugenour (historical)
- Laughlin
- Laurel, San Mateo County
- Laurel, Santa Cruz County
- Laurel, Alameda County
- Laurel Heights
- Lava Beds (historical)
- Lavic
- Lawndale, Los Angeles County
- Lawndale, Sonoma County
- Lawrence
- Lawrence Welk Resort Village
- Laws
- Laytonville
- Lazy Landing Mobile Home Park
- Le Grand
- Leadfield
- Lebec
- Leduc Acres
- Lee Vining
- Leeman (historical)
- Leesdale
- Leesville
- Leffingwell
- Leggett
- Leimert
- Leimert Park
- Leisure Lake Mobile Home Park
- Leisure Village
- Leisure World
- Leisureville Mobile Home Park
- Leland Manor
- Leliter (historical)
- Lemon Cove
- Lemon Grove
- Lemon Heights
- Lemona
- Lemoncove
- Lemoore
- Lemoore Station
- Lempon (historical)
- Lennox
- Lento
- Lenwood
- Leon
- Leona Heights
- Leona Valley
- Leonard (historical)
- Leonardi
- Leonards (historical)
- Lerdo
- Lerona
- Letcher (historical)
- Lethent (historical)
- Leucadia
- Levee (historical)
- Levis
- Lewiston
- Lexington (historical)
- Lexington Hills
- Liberty
- Liberty Mobile Home Court
- Liberty Park
- Lido Isle
- Lila C (historical)
- Lilac
- Lilac Park
- Lilac Terrace
- Lillis (historical)
- Limon
- Limoneira
- Lincoln
- Lincoln (historical)
- Lincoln Acres
- Lincoln Center Mobile Home Park
- Lincoln Crest
- Lincoln Heights
- Lincoln Park
- Lincoln Village, San Joaquin County
- Lincoln Village, Los Angeles County
- Linda
- Linda Mar
- Linda Rose
- Linda Vista, Los Angeles County
- Linda Vista, San Diego County
- Linda Vista (historical)
- Lindcove
- Linden
- Lindenwood
- Lindsay
- Linfield Oaks
- Lingard
- Linne
- Linnell Camp (Linnell Camp Census Designated Place)
- Linnie
- Linora (historical)
- Lira
- Lisko
- List
- Little Dixie (historical)
- Little Ethiopia
- Little Grass Valley
- Little Italy
- Little Jamison (historical)
- Little Lake
- Little Morongo Heights
- Little Osaka
- Little Penny
- Little Reed Heights
- Little River
- Little Tokyo
- Little York (historical)
- Littlerock
- Live Oak, Sacramento County
- Live Oak, Santa Cruz County
- Live Oak, Sutter County
- Live Oak Acres
- Live Oak Springs
- Livermore
- Livingston
- Liwaito (historical)
- Llanada
- Llano, Sonoma County
- Llano, Los Angeles County
- Lloyden Park
- Lobitos
- Locans
- Loch Lomond
- Locke
- Lockeford
- Lockhart
- Lockwood
- Lockwood Gardens
- Lodge Hill
- Lodi
- Lodi Junction
- LodiLakeWeather
- Lodoga
- Logan
- Logan Heights
- Logandale
- Loganville
- Lois
- Lokern
- Lokoya
- Loma
- Loma Linda
- Loma Mar
- Loma Portal
- Loma Rica
- Loma Vista Mobile Home Park
- Lombard
- Lombardi
- Lomita, San Diego County
- Lomita, Los Angeles County
- Lomita Park
- Lomo
- Lompico
- Lompoc
- Lompoc Village
- London
- Lone Hill Manor Mobile Home Park
- Lone Mountain
- Lone Pine
- Lone Star, Fresno County
- Lone Star, Glenn County
- Lone Wolf Colony
- Long Barn
- Long Beach
- Longvale
- Longview
- Lonoak
- Lonoke
- Lonsmith
- Lookout City (historical)
- Loomis
- Loope
- Loraine
- Lorenzo Station
- Lorraine (historical)
- Lort
- Los Alamitos
- Los Alamitos Junction
- Los Alamos
- Los Alisos Mobile Home Estates
- Los Altos, Los Angeles County
- Los Altos, Santa Clara County
- Los Altos Hills
- Los Angeles
- Los Angeles City Center
- Los Angeles Downtown
- Los Banos
- Los Berros
- Los Gatos
- Los Gatos Trailer Park
- Los Guilicos
- Los Medanos
- Los Molinos
- Los Nietos
- Los Nietos Junction
- Los Olivos, Santa Barbara County
- Los Olivos, San Bernardino County
- Los Osos
- Los Pitos (historical)
- Los Ranchitos, Marin County
- Los Ranchitos, Riverside County
- Los Robles Estates
- Los Robles Mobile Home Park
- Los Serranos
- Los Terrenitos
- Los Trancos Woods
- Los Tules
- Lost City
- Lost Hills
- Lotus
- Lovdal
- Lovejoy (historical)
- Lovelock
- Lowell
- Lower Forni
- Lower Haight
- Lower Lake
- Lower Pacific Heights
- Lower Rancheria (historical)
- Lower Town
- Lowes Corner
- Loyalton
- Loyola
- Loyola Corners
- Lucas Valley
- Lucas Valley-Marinwood
- Lucca
- Lucerne, Kings County
- Lucerne, Lake County
- Lucerne Valley
- Lucia
- Ludlow
- Lugo
- Lugonia Homes
- Lumer
- Lumpkin
- Lund
- Lundy
- Lurline (historical)
- Luzon
- Lyman (historical)
- Lynn Park Acres
- Lynnwood Estates
- Lynwood
- Lynwood Gardens
- Lynwood Hills
- Lyoth
- Lytle Creek
- Lytton
- Mabie
- Mace (historical)
- Machado (historical)
- Mackenson
- Macomber Palms
- Madera
- Madera Acres
- Madera Country Club Estates
- Madera Highlands
- Madera Ranchos
- Madison
- Madrid Manor Mobile Home Park
- Madrone
- Madrone (historical)
- Madrone Soda Springs (historical)
- Magalia
- Magnet (historical)
- Magnetic Spring (historical)
- Magnolia
- Magnolia Avenue
- Magnolia Gardens Mobile Home Park
- Magnolia Park
- Magra
- Magunden
- Mahoney Trailer Park
- Mahou Riviera
- Mailliard (historical)
- Maine Prairie
- Majors
- Makahmo (historical)
- Malaga
- Malakoff (historical)
- Malby Crossing
- Malcolm X Square
- Malibu
- Malibu Beach
- Malibu Bowl
- Malibu Hills
- Malibu Junction
- Malibu Mar Vista (historical)
- Malibu Vista
- Malibu West
- Mallard (historical)
- Maltby
- Maltha
- Malton (historical)
- Mammoth Lakes
- Manchester
- Manhattan Beach
- Manix
- Mankas Corner
- Manlove
- Manor
- Manteca
- Manteca Junction
- Manuel Mill
- Manzana
- Manzanar
- Manzanita, Marin County
- Manzanita, San Diego County
- Manzanita Acres
- Mar Vista
- Mar Vista Houses
- Maravilla
- Maravilla Housing Project
- Marble Mountain
- Marble Place
- Marcel
- March Air Force Base
- March Field
- Marchant
- Marconi
- Marcus Garvey Square
- Marcuse (historical)
- Maredith Mill
- Marguerite (historical)
- Mariana Ranchos
- Maricopa
- Mariemont
- Marigold
- Marigold (historical)
- Marin City
- Marina
- Marina del Rey
- Marina District
- Marina Travel Park
- Marina Village
- Marine Terrace
- Marinwood
- Mariposa
- Mark West Springs
- Marklee Village
- Markleeville
- Marks Place
- Marlboro
- Marne
- Mars
- Marsala (historical)
- Marsh Creek Springs
- Marsh Mill
- Marshall
- Marshall Junction
- Martell
- Martin Luther King Square
- Martinez, Riverside County
- Martinez, Tuolumne County
- Martinez, Contra Costa County
- Martinez Place
- Martins
- Martins Beach
- Martinus Corner
- Marty (historical)
- Marysville
- Mascorini Place
- Massack
- Matchin
- Matheny (Matheny Census Designated Place)
- Mather
- Mather Field
- Mathews Mill
- Matilija
- Matilija Springs
- Mattei
- Mattos
- Maxson
- Maxwell
- Maxwell Park
- Maxwellton (historical)
- May
- May (historical)
- Mayaro
- Maybert (historical)
- Mayfair
- Mayfield
- Mayflower (historical), Imperial County
- Mayflower (historical), Placer County
- Mayflower Village
- Mayhew
- Maywood
- McArthur Mobile Home Park
- McAvoy
- McCampbell
- McCauley (historical)
- McClellan Park (McClellan Park Census Designated Place)
- McClenney Tract (McClenney Tract Census Designated Place)
- McCloud
- McClure Place
- McConnel Place
- McCulloh
- McDonald
- McFarland
- McGill
- McHenry
- McKay, Calaveras County
- McKay, San Luis Obispo County
- McKenzie Spring (historical)
- McKinleyville
- McKittrick
- McMahons (historical)
- McManus
- McMullin (historical)
- McNear
- McNears Beach
- McNeil
- McPherson
- Mead Valley
- Meadow Brook
- Meadow Farms Trailer Park
- Meadow Lake Park
- Meadow Lakes
- Meadow Park
- Meadow Valley
- Meadow Vista
- Meadowbrook (Meadowbrook Census Designated Place)
- Meadowbrook Mobile Home Park, San Diego County
- Meadowbrook Mobile Home Park, San Mateo County
- Meadowbrook Woods
- Meadowlark Mobile Home Estates
- Meadowmont
- Meadowood Estates
- Meadows Manor Mobile Home Park
- Meadowsweet
- Mecca
- Medano (historical)
- Meeks Bay
- Meiners Oaks
- Meiners Oaks Trailer Park
- Meinert
- Meins Landing
- Meiss
- Melbourne
- Melita
- Mello
- Meloland
- Melones
- Melones Sunset Lake Estates
- Melrose, Alameda County
- Melrose, Los Angeles County
- Melsons Corner
- Melvin
- Mendenhall Springs
- Mendocino
- Mendota
- Mendoza (historical)
- Menifee
- Menifee Lakes
- Menlo Oaks
- Menlo Park
- Mentone
- Merazo
- Merced
- Merced Falls
- Merced Heights
- Merced Manor
- Mercey Hot Springs
- Mercuryville
- Meridian, Kern County
- Meridian, Santa Clara County
- Meridian, Sutter County
- Merienda (historical)
- Merlin
- Merrills Landing
- Merrimac
- Merritt
- Merryman
- Mesa
- Mesa Camp
- Mesa Grande
- Mesa Oaks
- Mesa Verde
- Mesa Vista
- Mesaville
- Mesquite
- Mesquite Oasis
- Mettler
- Metz
- Mexican Colony
- Meyers
- Meyers (historical)
- Meyers Place
- Mi-Wuk Village
- Micaflores
- Michigan Bar (historical)
- Michigan Bluff
- Michopdo (historical)
- Midas
- Midco
- Middle Waters (historical)
- Middleton
- Middletown
- Midland
- Midoil
- Midpines
- Midvalley
- Midway, Alameda County
- Midway, San Bernardino County
- Midway City
- Mikon
- Mile High
- Miles
- Miley
- Mill City (historical)
- Mill Valley
- Millar (historical)
- Millbrae
- Millbrae Meadows
- Miller
- Miller (historical)
- Miller Farms
- Millers Landing
- Millers Ranch
- Millersville
- Millerton
- Millertown (historical)
- Millham City (historical)
- Milligan
- Milligan District (historical)
- Mills
- Mills Orchard
- Mills Orchards
- Millsholm (historical)
- Millsmont
- Millspaugh
- Millspaugh (historical)
- Millux
- Milo
- Milpitas
- Milpitas Mobile Home Park
- Milton
- Milton (historical)
- Mina
- Mineral King
- Mineral Slide
- Minkler
- Minnelusa
- Minneola
- Minnesota Flat
- Mint Canyon
- Minter Village
- Minturn
- Mira Loma
- Mira Mesa
- Mira Monte
- Mirabel (historical)
- Mirabel Heights
- Mirabel Park
- Miracle Hot Springs
- Miracle Mile
- Mirador
- Miraflores (historical)
- Miraleste
- Miraloma Park
- Miramar, San Diego County
- Miramar, San Mateo County
- Miramonte
- Miscanaka (historical)
- Mishopshnow (historical)
- Mission, Los Angeles County
- Mission, Santa Barbara County
- Mission Bay
- Mission Beach
- Mission Canyon
- Mission del Magnolia Mobile Home Park
- Mission District
- Mission Dolores
- Mission Gorge Villa Mobile Home Park
- Mission Highlands
- Mission Hills, Los Angeles County
- Mission Hills, San Diego County
- Mission Hills, Santa Barbara County
- Mission Hills Mobile Home Park
- Mission Junction
- Mission Oaks Mobile Home Community
- Mission San Jose District
- Mission Springs
- Mission Terrace
- Mission Viejo
- Missouri Triangle
- Mitchell Corner
- Mitchell Place
- Mitchells Corner
- Mobile Haven Mobile Home Park
- Mobile Park West Mobile Home Park
- Mobile Parks West Mobile Home Park
- Mobilodge of Milpitas
- Moccasin
- Mock
- Mococo
- Modesto
- Modjeska
- Mohawk
- Mohawk Vista
- Mojave
- Mojave Base
- Mojave Heights
- Mokelumne City
- Mokelumne Hill
- Molena
- Molino, Sonoma County
- Molino, San Bernardino County
- Molus
- Monache (historical)
- Monaco
- Monada
- Moneta
- Monmouth
- Mono City
- Mono Hot Springs
- Mono Mills
- Mono Village
- Mono Village (historical)
- Mono Vista
- Monola
- Monolith
- Monroe
- Monroe Park
- Monroeville (historical)
- Monrovia
- Mons
- Monsanto
- Monson
- Monta Loma
- Monta Vista
- Montague
- Montalvin
- Montalvo
- Montara
- Montclair, Alameda County
- Montclair, San Bernardino County
- Monte Cristo (historical)
- Monte Grande Heights
- Monte Nido
- Monte Rio
- Monte Rosa
- Monte Sereno
- Monte Toyon
- Monte Vista
- Montebello
- Montecito
- Monterey
- Monterey Heights
- Monterey Park
- Monterey Vista Mobile Home Park
- Montesano
- Montesilla Mobile Home Club
- Montezuma, Solano County
- Montezuma, Tuolumne County
- Montgomery
- Montgomery City
- Montgomery Village
- Monticello (historical)
- Montpelier
- Montrose
- Monument Hills (Monument Hills Census Designated Place)
- Moody
- Mooney Flat
- Moonglow Mobile Home Park
- Moonlight Rim
- Moonridge
- Moore
- Moores Flat
- Moorpark
- Moorpark Home Acres
- Moose-horn Mobile Home Park
- Morada
- Moraga
- Moreland Mill
- Morena
- Morena Village
- Moreno, Riverside County
- Moreno, San Diego County
- Moreno Knolls
- Moreno Valley
- Morettis Junction
- Morgan Hill
- Morgans Landing
- Mormon
- Mormon Bar
- Morningside Park
- Morongo Valley
- Morrison
- Morristown
- Morro Bay
- Morse
- Mortero Palms
- Mortmar
- Morton
- Moseley (historical)
- Moskowite Corner (Moskowite Corner Census Designated Place)
- Moss, Imperial County
- Moss, Monterey County
- Moss Beach
- Moss Landing
- Mossdale
- Mother Lode Acres
- Mother Lode West
- Motor City
- Motordrome (historical)
- Mound City (historical)
- Mount Baldy
- Mount Bullion
- Mount Bullion (historical)
- Mount Davidson Manor
- Mount Eden
- Mount Hannah Lodge
- Mount Helix
- Mount Hermon
- Mount Hope
- Mount Hope House (historical)
- Mount Jackson
- Mount Laguna
- Mount Pleasant
- Mount Shasta
- Mount Signal
- Mount Vernon
- Mount Vernon (historical)
- Mount Washington
- Mount Wilson
- Mountain Center
- Mountain Gate Mobile Home Park
- Mountain Home, Santa Clara County
- Mountain Home, Tulare County
- Mountain Home Village
- Mountain House
- Mountain Mesa
- Mountain Pass
- Mountain Ranch
- Mountain Ranch Subdivision
- Mountain Retreat
- Mountain Shadows Mobile Home Estates
- Mountain Top Junction
- Mountain View, Contra Costa County
- Mountain View, San Bernardino County
- Mountain View, San Diego County
- Mountain View, Santa Clara County
- Mountain View Acres
- Mountain View Mobile and Recreational Vehicle Park
- Mountain View Mobile Estates
- Mountclef Village
- Mowry Landing
- Muir, Contra Costa County
- Muir, Mendocino County
- Muir Beach
- Mulford
- Mulford Gardens
- Mullen (historical)
- Mumbert Acres
- Mundo
- Munyon
- Muroc (historical)
- Murphys
- Murray
- Murray Park
- Murrieta
- Murrieta Hot Springs
- Murrieta Hot Springs (historical) (Murrieta Hot Springs Census Designated Place (historical))
- Muscatel
- Muscle Shoals
- Muscoy
- Musick (historical)
- Musk (historical)
- Mussey Grove (historical)
- Myford
- Myoma (historical)
- Myricks Corner
- Myrtletown
- Mystic
- Nacimiento
- Nacomis Indian Rancheria
- Nadeau
- Nairn (historical)
- Nanceville
- Napa
- Napa Abajo
- Napa Junction
- Napa Soda Springs
- Naples, Los Angeles County
- Naples, Santa Barbara County
- Naranjo
- Narbo (historical)
- Nares (historical)
- Narlon
- Narod
- Nashmead
- Nashua
- Nashville
- National City
- Natividad
- Natoma
- Naud Junction
- Navajo (historical)
- Navarro
- Navelencia
- Naylor Place
- Nealeys Corner
- Nebelhorn
- Nebo
- Nebo Center (historical) (Nebo Center Census Designated Place (historical))
- Need
- Needles
- Neff
- Nelson
- Nelson Bar (historical)
- Nelson Mill
- Nelsons Crossing
- Nema (historical)
- Neponset
- Neroly
- Nervo
- Nestor
- Neufeld
- Neuralia (historical)
- Nevada
- Nevada City
- Nevills (historical)
- Nevin
- New Almaden
- New Auberry
- New Blinzing (historical)
- New Brighton (historical)
- New Chicago
- New Chinatown
- New Cuyama
- New Dunn
- New Frontier Mobile Home Park
- New Hope
- New Hope Landing
- New Monterey
- New York Flat (historical)
- Newark
- Newberry Springs
- Newbury Park
- Newcastle
- Newhall
- Newlove
- Newman
- Newman Springs
- Newport
- Newport Beach
- Newport Coast
- Newport Coast (historical) (Newport Coast Census Designated Place (historical))
- Newport Heights
- Newport Marina Mobile Home Park
- Newport Terrace Mobile Home Park
- Newsom Springs
- Newton Park
- Newtown, El Dorado County
- Newtown, Nevada County
- Newtown, Solano County
- Newtown (historical)
- Newville
- Nicasio
- Nice
- Nichols
- Nickels Mobile Park
- Nickerson Gardens
- Nicklin
- Nicks Cove
- Nicolaus
- Nielsburg
- Niland
- Niles District
- Niles Junction
- Nimbus
- Nimshew
- Ninetynine Oaks
- Ninth Street Junction
- Nipinnawasee
- Nipomo
- Nipton
- Nitro
- Nob Hill
- Noe Valley
- Noel Heights
- Norco
- Nord
- Norden
- Norma Triangle
- Normal Heights
- Norman
- Normandy Village
- North Auburn
- North Barstow
- North Bay Terraces
- North Beach
- North Belridge
- North Bench
- North Bloomfield
- North Clairemont
- North Columbia
- North Cucamonga
- North Dinuba
- North Edwards
- North El Monte
- North Elsinore
- North Fair Oaks
- North Fillmore
- North Fontana
- North Fork
- North Gate (North Gate Census Designated Place)
- North Glendale
- North Highland Park
- North Highlands
- North Hills, Los Angeles County
- North Hollywood
- North Jamul
- North Lakeport
- North Landing
- North Loma Linda
- North Long Beach
- North McHenry
- North Muroc (historical)
- North Norton
- North of the Panhandle
- North Ontario
- North Palm Springs
- North Park
- North Placerville
- North Pomona
- North Ranch
- North Richmond
- North Sacramento
- North San Juan
- North Santa Maria
- North Shafter
- North Sherman Way
- North Shore
- North Star
- North Star Ranch
- North Tustin
- North Wawona
- North Wawona (historical)
- North Woodbridge
- Northam (historical)
- Northgate Trailer Park
- Northridge
- Northspur
- Northwest Berkeley
- Northwood
- Northwood Heights
- Northwood Lodge
- Norton, San Joaquin County
- Norton, Yolo County
- Nortonville
- Norval (historical)
- Norwalk
- Notarb
- Notleys Landing
- Novato
- Noverd
- Noyo
- Nuestro
- Nuevo
- Nuga (historical)
- Nutwood
- Nyland
- Nystrom Village
- O'Neals
- O'Neil Place
- Oak Center
- Oak Creek Hills
- Oak Gardens Estates
- Oak Glen
- Oak Grove, Butte County
- Oak Grove, Calaveras County
- Oak Grove, San Diego County
- Oak Grove, Tulare County
- Oak Grove (historical)
- Oak Haven Estates
- Oak Hill
- Oak Hills, Monterey County
- Oak Hills, San Bernardino County
- Oak Knoll, Los Angeles County
- Oak Knoll, Napa County
- Oak Park, Sacramento County
- Oak Park, San Luis Obispo County
- Oak Park, Ventura County
- Oak Park Estates
- Oak Ridge Mobile Estates
- Oak Ridge Village
- Oak Shores (Oak Shores Census Designated Place)
- Oak Tree Village
- Oak Valley
- Oak View
- Oak Village
- Oakdale
- Oakhurst
- Oakhurst (historical)
- Oakland
- Oakley
- Oakmont
- Oakridge Ranches
- Oaks
- Oaks Mobile Home And Recreational Vehicle Park
- Oakville
- Oasis, Mendocino County
- Oasis, Riverside County
- Oasis Mobile Home Park
- Oban
- Oberg (historical)
- Obregon
- Occidental
- Ocean Beach
- Ocean Breeze Mobile Home Park
- Ocean Breeze Trailer Park
- Ocean Hills
- Ocean Park
- Ocean Roar
- Ocean View
- Ocean View Estates
- Oceana
- Oceano
- Oceano Beach
- Oceanside
- Oceanview
- Ockenden
- Ocotillo
- Ocotillo Wells
- Octol
- Odd Fellows Park
- Odessa (historical)
- Ogilby
- Ohm
- Ohmer (historical)
- Oil City
- Oil Junction
- Oildale
- Ojai
- Ojai Valley Estates Mobile Home Park
- Ojala
- Olancha
- Olcott
- Old Adobe
- Old Bailey Place
- Old Bretz Mill
- Old Chinatown (historical)
- Old Corral
- Old Dale
- Old Fig Garden (Old Fig Garden Census Designated Place)
- Old Forbestown
- Old Fort Jim
- Old Garlock
- Old Gilroy
- Old Hilltown
- Old Hopland
- Old Mammoth
- Old Mill Park Mobile Home Park
- Old Oakland
- Old Ornbaun Hot Springs
- Old Pino
- Old Point Comfort
- Old Red Rock Place
- Old River
- Old Town, Marin County
- Old Town, Santa Barbara County
- Old Town, Ventura County
- Old Town, Kern County
- Old Town Pasadena
- Old Town San Diego
- Oleander
- Olema
- Oleo (historical)
- Oleum
- Olga
- Olig (historical)
- Olinda (historical)
- Olive
- Olive Hill
- Olive Springs (historical)
- Olive View
- Olivehurst
- Olivenhain
- Oliver (historical)
- Olympia
- Olympia Glade
- Olympic Heights
- Omaha Heights
- Omega
- Omira
- Omo Ranch
- Omus
- One Hundred Palms
- Ontario
- Onyx
- Oo-moo-chah (historical)
- Opal Cliff Park Mobile Home Park
- Opal Cliffs, Santa Cruz County
- Ophir
- Ophir Hill Acres
- Ora
- Orange
- Orange Avenue Junction
- Orange Cove
- Orange Mobile Home Park
- Orange Park Acres
- Orange Village Mobile Home Park
- Orangetree
- Orangevale
- Orchams
- Orchard
- Orchard Lane Mobile Home Park
- Orcutt
- Ordbend
- Ordway
- Oregon City
- Oregon House
- Orella (historical)
- Orford
- Orinda
- Orinda Village
- Orion (historical)
- Orita
- Orland
- Orleans Flat
- Orlem (historical)
- Ormand
- Oro Grande
- Oro Loma
- Oroleve
- Orosi
- Oroville
- Oroville East
- Oroville Junction
- Orris
- Orrs Springs
- Ortega, Santa Barbara County
- Ortega, San Joaquin County
- Ortonville
- Orwood
- Ostrom
- Oswald
- Otay
- Otay Mesa
- Oteys Sierra Village
- Otterbein
- Outer Mission
- Outer Sunset
- Outingdale
- Outpost Estates
- Ovejo (historical)
- Overlook
- Owenyo
- Owl
- Owl Mobile Manor
- Oxalis
- Oxford
- Oxford Mill
- Oxnard
- Oxnard Beach
- Oxnard Shores
- Ozol
- Pabrico
- Pacer
- Pachappa
- Pacheco
- Pacific
- Pacific Beach
- Pacific Grove
- Pacific Grove Acres
- Pacific Heights
- Pacific Manor
- Pacific Palisades
- Pacific Skies Mobile Home Park
- Pacific Trailer Park
- Pacifica
- Packwood (historical)
- Pacoima
- Paicines
- Paige
- Paintersville
- Pajaro
- Pajaro Mobile Manor
- Pala
- Pala Mesa
- Palermo
- Palisades Del Rey (historical)
- Palm City
- Palm Desert
- Palm Desert Country
- Palm Grove
- Palm Lodge Mobile Home Estates
- Palm Springs
- Palm Wells
- Palmdale
- Palmer (historical)
- Palmetto
- Palmo
- Palms
- Palo Alto
- Palo Alto Orchards
- Palo Cedro
- Palo Verde, Imperial County
- Palo Verde, Santa Clara County
- Paloma
- Paloma (historical)
- Palomar East Mobile Home Park
- Palomar Mountain
- Palomar Park
- Palomar Park Mobile Home Park
- Palomar West Mobile Home Park
- Palos Verdes Estates
- Palos Verdes Peninsula
- Panama
- Panamint
- Panamint Springs
- Panhandle
- Panoche
- Panoche Junction
- Panorama City
- Panorama Heights, Orange County
- Panorama Heights, San Bernardino County
- Panorama Heights, Tulare County
- Paradise
- Paradise Cay
- Paradise Cove Mobile Home Park
- Paradise Hills
- Paradise Park
- Paradise Pines
- Paradise Springs
- Paradise View Mobile Estates
- Paramount
- Pardee
- Paris
- Park Creek Village Mobile Home Park
- Park Forest
- Park Hill
- Park Merced
- Park Royale
- Park Sierra Mobile Home Park
- Park View Commons
- Park Villa Mobile Home Estates
- Park Village, El Dorado County
- Park Village, Inyo County
- Parker Dam
- Parker Junction
- Parkfield
- Parkfield Junction
- Parkhill
- Parklabrea
- Parkmoor
- Parksdale
- Parkway
- Parkway-South Sacramento
- Parkwood
- Parlier
- Parque Pacifico Mobile Home Park
- Parque Santiago Mobile Home Park
- Parramore Springs
- Pasadena
- Pasatiempo
- Paskenta
- Paso Robles
- Patch
- Patterson
- Patterson Tract (Patterson Tract Census Designated Place)
- Patton
- Paularino
- Paulsell
- Paulson Place
- Pauma Valley
- Paymaster Landing
- Paynesville
- Peaceful Pines
- Peaceful Valley
- Peach Mobile Estates
- Peachton
- Pearblossom
- Peardale
- Pearland
- Pearson, San Joaquin County
- Pearson, Yuba County
- Pearsonville
- Peart (historical)
- Pease (historical)
- Pebble Beach
- Pedley
- Pedro Valley
- Peethill
- Pellow Place
- Peltier
- Penn Valley
- Penngrove
- Pennington
- Penryn
- Pentz
- Penvir
- Pepper Corner
- Peppermint Creek
- Pepperwood Grove
- Peral
- Peralta Hills
- Peralta Villa
- Perkins
- Perks Corner
- Perris
- Perry, Los Angeles County
- Perry, Santa Clara County
- Perrys Corner
- Pescadero
- Petaluma
- Peters
- Petersburg (historical)
- Peterson Mill
- Peterson Place
- Petro (historical)
- Petroleum (historical)
- Pettit Place
- Phelan
- Phelps Corner
- Philbrick Mill
- Phillips
- Philo
- Phoenix Lake
- Phoenix Lake County Club Estates
- Phoenix Lake-Cedar Ridge
- Picacho
- Picfair Village
- Pico
- Pico Gardens
- Pico Rivera
- Pico-Robertson
- Piedmont
- Piedra
- Pierce
- Piercy
- Pierpoint (Pierpoint Census Designated Place)
- Pierpont Bay
- Pieta
- Pike
- Pilibos Ranch
- Pilliken
- Pilot Hill
- Pine Acres
- Pine Canyon Mobile Estates
- Pine Cove
- Pine Flat
- Pine Grove, Amador County
- Pine Grove, Lake County
- Pine Grove, Mendocino County
- Pine Grove, San Diego County
- Pine Hills, San Diego County
- Pine Hills, Humboldt County
- Pine Land
- Pine Mountain Club, Kern County
- Pine Valley
- Pine Wood
- Pinebrook
- Pinecrest, Nevada County
- Pinecrest, Tuolumne County
- Pinecroft
- Pinedale
- Pinehurst
- Pineridge
- Pinewood
- Pinewood Mobile Home Park
- Pinezanita
- Pinnacles
- Pino Grande
- Pinole
- Piñon Hills (Pinon Hills)
- Pinon Hills Estates
- Pinon Pines Estates
- Pinto Wye
- Pinyon Crest
- Pinyon Pines
- Pioneer
- Pioneer Point
- Pioneertown
- Pipers (historical)
- Pippin Corner
- Piru
- Pisgah
- Pismo Beach
- Pitco
- Pittsburg
- Piute (historical)
- Pixley
- Pizona
- Placentia
- Placerville
- Plainfield
- Plains (historical)
- Plainsburg
- Plainview
- Planada
- Plano
- Plantation Mobile Home Estates
- Plantel (historical)
- Plaskett
- Plasse
- Plaster City
- Play Port Mobile Home Village
- Playa del Rey
- Playa Vista
- Plaza Mobile Home Estates
- Pleasant Grove
- Pleasant Grove (historical)
- Pleasant Hill
- Pleasant Valley
- Pleasant Valley Mobile Home Park, San Diego County
- Pleasant Valley Mobile Home Park, Ventura County
- Pleasant View
- Pleasanton
- Pleyto
- Pleyto (historical)
- Plum Valley
- Plumas
- Plumas Eureka
- Plumas Eureka (historical)
- Plumas Lake
- Plumbago
- Plumtree (historical)
- Plymouth
- Plymouth Village
- Poe
- Poe (historical)
- Poets Corner
- Poffenbergers Landing
- Poinsett Park
- Point Arena
- Point Dume Mobile Home Park
- Point Pleasant
- Point Reyes (historical)
- Point Reyes Station
- Point Richmond
- Poker Flat
- Pokerville (historical)
- Polaris
- Pole Garden
- Poleta
- Polk
- Pollock
- Pollock Pines
- Poloma (historical)
- Pomar (historical)
- Pomins
- Pomo
- Pomona
- Pomona Islander Mobile Home Park
- Ponca
- Pond
- Ponderosa
- Ponderosa Basin
- Ponderosa Club Mobile Home Park
- Ponderosa Fairway Estates
- Ponderosa Mobile Home Estates
- Ponderosa Mobile Home Park
- Ponderosa Palisades
- Ponderosa Park
- Pope
- Pope Valley
- Poplar
- Poplar-Cotton Center
- Porphyry
- Port Chicago (historical)
- Port Costa
- Port Hueneme
- Port Orford
- Port San Luis
- Port Watsonvile
- Port Watsonville (historical)
- Porter
- Porterville
- Portex (historical)
- Portico Mobile Home and Garden Park
- Portola, Plumas County
- Portola, San Francisco County
- Portola Heights Mobile Home Park
- Portola Hills
- Portola Hills (historical) (Portola Hills Census Designated Place (historical))
- Portola Valley
- Portuguese Bend
- Posey
- Poso Park
- Posts
- Potrero
- Potrero District
- Potter Valley
- Potwisha
- Poverty Hill
- Poway
- Poway Grove (historical)
- Poway Grove Park
- Poway Royal Mobile Estates
- Powellton
- Pozo
- Prado Verde Mobile Home Park
- Prairie City
- Prather
- Pratt Place
- Pratton
- Prenda
- Presidio Heights
- Presidio Terrace
- Presswood
- Preston
- Prewit (historical)
- Priest
- Primero (historical)
- Princeton, Colusa County
- Princeton, San Mateo County
- Prize (historical)
- Professorville
- Progress
- Prospero
- Prosser (historical)
- Prosser Lake Heights
- Prosser Lakeview Estates
- Prothero Mobile Home Park
- Providence (historical)
- Prunedale
- Pueblo de Figueroa (historical)
- Pueblo Del Rio Public Housing
- Pueblo del Sol Mobile Park
- Pueblo Serena Mobile Home Park
- Puente Junction
- Pulga
- Pumpkin Center
- Purisima (historical)
- Pushawalla Palms
- Quail
- Quail Hollow
- Quail Meadows
- Quail Oaks
- Quail Ridge Ranch
- Quail Valley
- Quail Valley (historical) (Quail Valley Census Designated Place (historical))
- Quailwood
- Quaker Hill (historical)
- Quaker Meadow
- Quality
- Quartz
- Quartz (historical)
- Quartz Hill
- Quartz Point Mobile Home Park
- Queen City
- Quiet Village Mobile Home Park
- Quinby
- Quincy
- Quincy Junction
- Quintette
- Quito (historical)
- Racimo
- Rackerby
- Raco
- Radec
- Radnor
- Radum
- Rafael Village
- Raffetto
- Ragtown
- Rail Road Flat
- Rail-A-Way Trailer Park
- Rainbow, Placer County
- Rainbow, San Diego County
- Rainbow Canyon Village
- Rainbow Wells
- Raisin City
- Ralph
- Ralph Leggett Place
- Ralston (historical)
- Ramada
- Ramal
- Ramirez
- Ramona, Sacramento County
- Ramona, San Diego County
- Ramona Bowl
- Ramona Gardens
- Ramona Park
- Rampart
- Rampart Village
- Ramsey
- Ramsey Crossing
- Rana
- Ranch House Estates
- Ranch Mobile Home Park
- Ranchero Thunderbird Mobile Home Court
- Ranchita
- Rancho Adolfo Mobile Home Estates
- Rancho Alipaz Mobile Home Park
- Rancho Bernardo
- Rancho Calaveras, Calaveras County
- Rancho Calevero Mobile Home Park
- Rancho Carlsbad Trailer Park
- Rancho Casitas Mobile Home Park
- Rancho Cordova
- Rancho Cucamonga
- Rancho del Arroyo Mobile Home Park
- Rancho del Avion Capistrano Mobile Home Park
- Rancho Del Campo
- Rancho del Rey
- Rancho del Sol
- Rancho del Sol Mobile Home Park
- Rancho Dos Palmas
- Rancho Escondido Mobile Home Park
- Rancho Fullerton Mobile Home Estates
- Rancho Granada Mobile Homes
- Rancho Huntington Mobile Home Park
- Rancho la Mesa Mobile Home Court
- Rancho La Paz
- Rancho La Siesta Mobile Home Park
- Rancho las Perris
- Rancho Llano Seco
- Rancho Loma Rica
- Rancho Mirage
- Rancho Murieta
- Rancho Palos Verdes
- Rancho Park
- Rancho Penasquitos
- Rancho Poquitos
- Rancho Ramon Mobile Home Park
- Rancho Rinconada
- Rancho San Diego
- Rancho San Luis Rey Trailer Park
- Rancho Santa Clarita
- Rancho Santa Fe
- Rancho Santa Margarita
- Rancho Santa Paul Mobile Home Park
- Rancho Seco
- Rancho Sonora Estates
- Rancho Tehama Reserve
- Rancho Thirty-nine Mobile Home Park
- Rancho Tierra Grande
- Rancho Trabuco
- Rancho Vista
- Rancho Vista Mobile Home Park, Sonoma County
- Rancho Vista Mobile Home Park, San Diego County
- Rancho Yolo Mobile Home Park
- Ranchos del Oro
- Rand
- Randall
- Randolph
- Randsburg
- Rankin (historical)
- Rannells (historical)
- Rapetti (historical)
- Rapid River Mobile Home Park
- Ratto Landing
- Ravenna
- Ravenswood
- Rawhide, Placer County
- Rawhide, Tuolumne County
- Raymer
- Raymond
- Raymond Hill
- Rayo
- Rector
- Red Apple
- Red Arrow Mobile Home Park
- Red Bluff
- Red Corral (Red Corral Census Designated Place)
- Red Dog
- Red Fir
- Red Mountain
- Red Point (historical)
- Redbanks
- Redbud Park (historical)
- Redding
- Redding Lakeside Mobile Estates
- Redding Oaks Mobile Home Park
- Reddingwood Mobile Home Park
- Redlands
- Redlands Heights
- Redman
- Redondo Beach
- Redondo Junction
- Redrock (historical)
- Redway
- Redwood City
- Redwood Corral
- Redwood Estates
- Redwood Grove
- Redwood Heights
- Redwood Junction
- Redwood Lodge, Mendocino County
- Redwood Lodge, Santa Cruz County
- Redwood Park
- Redwood Shores
- Redwood Terrace
- Redwood Valley
- Redwoods Mobile Home Community
- Reed
- Reedley
- Reeds (historical)
- Reef Station
- Reefer City (historical)
- Reeves Place, Mendocino County
- Reeves Place, San Luis Obispo County
- Regal Mobile Club Estates
- Regina Heights
- Reilly (historical)
- Reilly Heights
- Reka (historical)
- Relief
- Remillard (historical)
- Remington Hill (historical)
- Remnoy
- Rendalia
- Reno Junction
- Renoville
- Renshaw Place
- Reseda
- Reward, Kern County
- Reward, Inyo County
- Rex
- Rex Manor
- Reyes Place
- Reynolds
- Reynolds (historical), Mendocino County
- Reynolds (historical), Tulare County
- Reynolds Place (historical)
- Rheem, Contra Costa County
- Rheem Valley
- Rialto
- Ribbonwood
- Ribier
- Ricardo
- Riccas Corner
- Rice
- Rice Fork Summer Homes
- Rices Junction
- Riceton
- Rich
- Rich Gulch
- Richardson Springs
- Richfield
- Richfields
- Richgrove
- Richland
- Richland (historical)
- Richmond
- Richmond District
- Richvale
- Rico
- Ridge
- Ridge View
- Ridgecrest
- Ridgecrest Estates
- Ridgemark
- Ridgeview Village
- Ridgewood
- Ridgewood Park
- Riego
- Rimforest
- Rimlon
- Rimrock
- Rincon, San Diego County
- Rincon, Santa Cruz County
- Rincon, Ventura County
- Rinconada
- Rio Bravo
- Rio Del Mar
- Rio Dell, Sonoma County
- Rio Dell, Humboldt County
- Rio Hondo
- Rio Linda
- Rio Nido
- Rio Oso
- Rio Plaza Mobile Home Park
- Rio Vista, Solano County
- Rio Vista Junction
- Rio Vista Mobile Home Estates
- Ripley
- Ripon
- Ripperdan
- River Garden (historical)
- River Oaks
- River Park Mobile Estates
- River Pines
- River Road Estates
- Riverbank
- Riverbend
- Riverbend Family Mobile Home Park
- Riverdale, Fresno County
- Riverdale, Mendocino County
- Riverdale Park
- Riverkern
- Riverland Mobile Home Park
- Riverside, Sacramento County
- Riverside, Stanislaus County
- Riverside, Riverside County
- Riverside Grove
- Riverside Junction
- Riverside Mobile Home Park
- Riverside Mobile Park
- Riverton
- Riverview, San Diego County
- Riverview, Yolo County
- Riverview (historical)
- Riverview Farms
- Riverwood Mobile Home Estates
- Riviera
- Riviera (historical)
- Riviera Estates
- Riviera Mobile Estates
- Riviera Mobile Home Park
- Riviera Shores
- Riviera Villas
- Riviera West
- Roadamite (historical)
- Roads End
- Rob Roy Junction
- Robbins
- Robert (historical)
- Robertsville
- Robinson (historical)
- Robinson Mills
- Robinson Ranch
- Robinsons Corner
- Robla
- Roblar
- Roble
- Robles Del Rio
- Roche
- Rochedale Village
- Rochester
- Rock City
- Rock Creek
- Rock Creek Camp
- Rock Crest
- Rock Haven
- Rock Haven (historical)
- Rock Springs (historical)
- Rockaway Beach
- Rocking K
- Rocklin
- Rockport
- Rockridge
- Rocktram
- Rockville
- Rockwood
- Rocky Hill, Tulare County
- Rocky Hill, Calaveras County
- Rodeo
- Rodgers Crossing
- Rodgers Flat
- Rodney's Mobile Park
- Rodriguez Camp (Rodriguez Camp Census Designated Place)
- Rogerville
- Rohnert Park
- Rolands
- Rolinda
- Rolling Hills, Los Angeles County
- Rolling Hills, Madera County
- Rolling Hills, Tuolumne County
- Rolling Hills Estates
- Rollingwood
- Roma
- Romoland
- Ronda (historical)
- Roosevelt, Los Angeles County
- Rosamond
- Rose (historical)
- Rose Hill
- Rose Park
- Rose Place
- Rosedale
- Roseland
- Rosemary
- Rosemead
- Rosemont, San Diego County
- Rosemont, Sacramento County
- Roseville, San Diego County
- Roseville, Placer County
- Ross, Marin County
- Ross, Sonoma County
- Ross Corner
- Rossi
- Rossmoor
- Rotavele
- Rough and Ready
- Round Valley
- Roundup Trailer Lodge
- Routier (historical)
- Rovana
- Rowen
- Rowes (historical)
- Rowland
- Rowland Heights
- Royal Gardens Mobile Home Estates
- Royal Oak Manufactured Home Community
- Royal Oak Mobile Home Park
- Royal Palms
- Royal Palms Mobile Estates
- Royal Palms Mobile Home Park
- Rubicon Properties
- Rubicon Springs (historical)
- Rubidoux
- Rucker
- Rugg (historical)
- Rumsey
- Running Springs
- Runnymeade (historical)
- Runnymede Poultry Colony (historical)
- Russ
- Russell
- Russell City
- Russian River Terrace
- Rutherford
- Ruthven
- Ryan
- Ryde
- Sablon
- Sabre City
- Sabre Springs
- Sacanap
- Sacate
- Saco
- Sacramento
- Sacramento Landing
- Saddle Junction
- Saddleback Mobile Lodge
- Safari Mobile Home Park
- Sage
- Sage (historical)
- Sageland
- Sahara Mobile Home Park
- Sahl Court
- Saint Andrews Village
- Saint Claire Gardens
- Saint Elmo (historical)
- Saint Francis
- Saint Francis Acres
- Saint Francis Square
- Saint Francis Wood
- Saint Helena
- Saint James Park
- Saint Johns
- Saint Louis
- Saint Marie Mobile Home Park
- Saint Vincent
- Salida
- Salinas
- Salminas Resort
- Salmon Creek
- Salmon Falls (historical)
- Salsbury (historical)
- Saltdale
- Salton
- Salton City
- Salton Sea Beach
- Saltus
- Salvador
- Salvia
- San Andreas
- San Anselmo
- San Antonio
- San Antonio Heights
- San Ardo
- San Augustine
- San Benito
- San Bernardino
- San Bruno
- San Carlos
- San Clemente
- San Diego
- San Diego Country Estates
- San Dimas
- San Emidio
- San Felipe, San Diego County
- San Felipe, Santa Clara County
- San Fernando
- San Francisco
- San Gabriel
- San Geronimo
- San Gregorio
- San Ignacio
- San Jacinto
- San Joaquin
- San Joaquin Hills
- San Joaquin Hills (historical) (San Joaquin Hills Census Designated Place (historical))
- San Joaquin River Club
- San Joaquin River Estates
- San Jose
- San Jose Mobile Home Park
- San Juan Bautista
- San Juan Capistrano
- San Juan Hot Springs
- San Juan Mobile Home Estates
- San Lawrence Terrace
- San Leandro
- San Lorenzo
- San Lorenzo Park
- San Lucas
- San Luis Obispo
- San Luis Rey
- San Luis Rey Heights
- San Marcos
- San Marcos Mobile Estates
- San Marino
- San Martin
- San Mateo
- San Mateo Park
- San Miguel
- San Onofre
- San Pablo
- San Pasqual
- San Pedro
- San Pedro Hill
- San Pedro Terrace
- San Quentin
- San Rafael
- San Ramon
- San Ramon Village
- San Roque Mobile Home
- San Sevaine (historical)
- San Simeon
- San Tomas
- San Ysidro, San Diego County
- Sanborn
- Sand Canyon
- Sand City
- Sand Hill
- Sandalwood Mobile Home Park
- Sandberg
- Sanders
- Sandia
- Sandoz
- Sandpiper Mobile Home Park
- Sands
- Sandspur (historical)
- Sandy Gulch
- Sandy Korner
- Sandyland
- Sandyland Cove
- Sanger
- Sanitarium
- Sankey
- Sans (historical)
- Santa Ana
- Santa Ana Gardens
- Santa Ana Heights
- Santa Anita
- Santa Barbara
- Santa Clara
- Santa Clara Trailer Village
- Santa Clarita
- Santa Crus
- Santa Cruz
- Santa Fe Springs
- Santa Margarita
- Santa Margarita Groves
- Santa Maria, Los Angeles County
- Santa Maria, Santa Barbara County
- Santa Monica
- Santa Nella
- Santa Nella Village
- Santa Paula
- Santa Rita
- Santa Rita Park
- Santa Rosa
- Santa Rosa Ranch Estates
- Santa Rosa South
- Santa Rosa West
- Santa Susana
- Santa Susana Knolls
- Santa Venetia
- Santa Ynez
- Santa Ysabel
- Santa Ysabel (historical)
- Santee
- Saranap
- Saratoga
- Saratoga Acres
- Saratoga Springs
- Sargent
- Saticoy
- Sattley
- Saucelito
- Saugus
- Sausalito
- Savannah (historical)
- Sawmill Flat
- Sawtelle
- Sawyers Crossing (historical)
- Saxon
- Scales
- Scenic Brook
- Scenic Heights
- Scenic Valley Ranchos
- Scenic View
- Scheelite
- Schellville
- Schilling
- Schwaub (historical)
- Sciots Camp
- Scissors Crossing
- Scotland
- Scotts
- Scotts Corner
- Scotts Flat
- Scotts Valley
- Scottsville
- Scovern Hot Springs (historical)
- Scranton
- Scripps Ranch
- Sea Aire Mobile Home Park
- Sea Aria East Mobile Home Estates
- Sea Aria West Mobile Home Estates
- Sea Breeze Trailer Park
- Sea Cliff
- Sea Ranch
- Seabright
- Seacliff, Santa Cruz County
- Seacliff, San Francisco County
- Seacliffe Mobile Home Park
- Seahaven
- Seal Beach
- Seal Beach Trailer Park
- Seal Cove
- Searles
- Searles Valley
- Sears Point
- Searsville (historical)
- Seaside
- Seaview
- Sebastopol, Nevada County
- Sebastopol, Sonoma County
- Second Garrotte
- Secret Canyon (historical)
- Secret Town
- Sedco Hills
- Sedco Hills (historical) (Sedco Hills Census Designated Place (historical))
- Seeley
- Seguro
- Seigler Springs
- Selby
- Selma
- Selwyn (historical)
- Seminary Park
- Seminole Hot Springs
- Seminole Springs Trailer Park
- Semitropic
- Sentinel (historical)
- Sentous
- Sepulveda
- Sequoia, Tulare County
- Sequoia, Tuolumne County
- Sequoia Crest (Sequoia Crest Census Designated Place)
- Sequoia Mobile Home Park
- Serena
- Serena Park
- Sereno Del Mar (Sereno Del Mar Census Designated Place)
- Serra Mesa
- Serra Village
- Serrano
- Serrano Heights
- Serrano Place
- Serrano Village
- Sespe
- Sespe Village
- Seven Oaks
- Seven Pines
- Seven Trees, Santa Clara County
- Seville
- Shackelford
- Shadow Hills
- Shadow Ridge Creek
- Shady Acres Trailer Park
- Shady Dell
- Shady Glen
- Shady Hill Trailer Park
- Shady Oaks Mobile Park
- Shady Rest (historical)
- Shady Rest Trailer and Recreational Vehicle Park
- Shafter, Marin County
- Shafter, Kern County
- Shamrock (historical)
- Shandon
- Shands (historical)
- Shangri La Estates
- Shannon
- Sharon
- Sharon Heights
- Sharon Valley
- Sharp Park
- Shasta
- Shasta Lake
- Shasta Lake Mobile Home Park
- Shaver Lake
- Shaver Lake Heights
- Shaws Flat
- Shay Creek Summer Home Area
- Sheep Ranch
- Shelby Flat (historical)
- Sheldon
- Shell
- Shell Beach
- Shelltown
- Shellville Colony
- Shelter Cove
- Shepards
- Sherburns (historical)
- Sheridan, Sonoma County
- Sheridan, Placer County
- Sherman Acres
- Sherman Heights
- Sherman Oaks
- Sherwood Forest, Nevada County
- Sherwood Forest, Tuolumne County
- Sherwood Forest, San Francisco County
- Sherwood Forest, Los Angeles County
- Shiloh
- Shingle Springs
- Shingletown
- Shinn
- Shipp (historical)
- Shippee
- Shipyard Acres
- Shirley, Kings County
- Shirley, Orange County
- Shirley Meadows
- Shisholop (historical)
- Sholun
- Shorb
- Shore Acres
- Short Place
- Shoshone
- Shrub
- Shuman
- Sibagna (historical)
- Siberia
- Sibley (historical)
- Sicard Flat
- Sides (historical)
- Sierra Brooks
- Sierra Cedars
- Sierra City
- Sierra Glen
- Sierra Heights, San Bernardino County
- Sierra Heights, Tulare County
- Sierra Knoll Estates
- Sierra Madre
- Sierra Pines
- Sierra Sky Park
- Sierra Springs
- Sierra Trailer Park
- Sierra Village
- Sierra Vista, Madera County
- Sierra Vista, Los Angeles County
- Sierra Vista Mobile Estates
- Sierra Vista Park
- Sierra Vista Trailer Park
- Sierraville
- Signal Hill
- Signal Port (historical)
- Silongkoyo (historical)
- Silt
- Silvas Grove (historical)
- Silver City
- Silver Creek (historical)
- Silver Dons Mobile Home Park
- Silver Lake
- Silver Lake Heights
- Silver Lakes
- Silver Mountain (historical)
- Silver Penny Mobile Home Park
- Silver Spur Mobile Manor
- Silver Terrace
- Silverado
- Simerson
- Simi
- Simi Valley
- Simmler, Santa Margarita
- Simms
- Simons
- Singing Springs
- Sisquoc
- Sites
- Skandia Mobile Country Park
- Skidoo (historical)
- Skinners
- Sky Londa
- Sky Valley
- Sky Valley Mobile Home Park
- Skyforest
- Skyhigh
- Skyland
- Skylark Mobile Home Park
- Skyline North
- Skytop
- Slater
- Slates Hot Springs
- Sleepy Hollow, Marin County
- Sleepy Hollow, San Bernardino County
- Sleepy Valley
- Sloat
- Sloughhouse
- Sly Park
- Smartsville
- Smeltzer
- Smiley Heights
- Smiley Park
- Smith Corner
- Smith Mill
- Smithflat
- Smoke Tree
- Smyrna (historical)
- Snelling
- Snoboy
- Snow Bend
- Snow Creek
- Snow Point (historical)
- Snow Tent (historical)
- Snowshoe Springs
- Snug Harbor Mobile Home Park
- Snug Harbor Trailer Park (historical)
- Soapweed
- Soboba Hot Springs
- Sobrante
- Soda Bay
- Soda Springs, Mendocino County
- Soda Springs, Nevada County
- Soda Springs, Placer County
- Soda Springs, Tulare County
- Solana Beach
- Solano City (historical)
- Soledad
- Soledad Sulphur Springs (historical)
- Solemint
- Solon (historical)
- Solromar
- Solvang
- Solyo
- Somerset
- Somersville
- Somis
- Somis (historical)
- Sonoma
- Sonoma Vista
- Sonora
- Sonora Hills
- Sonora Junction
- Sonora Knolls
- Sonora Meadows
- Sonora Ranchettes
- Soquel
- Sorensens
- Sorenson
- Sorrento
- Sorroca
- Soto (historical)
- Soto Street Junction
- Soudan
- Soulsbyville
- Sousa Corners
- South Adelanto
- South Anaheim
- South Bay Terraces
- South Beach
- South Berkeley
- South Camanche Shore
- South Carthay
- South Corcoran
- South Coyote
- South Crest
- South Dos Palos
- South El Monte
- South Encantato
- South Fontana
- South Fork, Madera County
- South Fork, Mendocino County
- South Fork (historical)
- South Gate
- South Grove Mobile Home Estates
- South Lake, Kern County
- South Lake Tahoe
- South Landing
- South Leggett
- South Los Angeles
- South Oceanside
- South of Market
- South Oroville
- South Park, Riverside County
- South Park, San Diego County
- South Pasadena
- South San Diego
- South San Francisco
- South San Gabriel
- South San Jose Hills
- South Santa Ana
- South Santa Rosa
- South Shore
- South Taft
- South Trona
- South Vallejo
- South Wawona
- South Wawona (historical)
- South Whittier
- South Woodbridge
- South Yuba
- South Yuba City
- South Yuba City (historical) (South Yuba City Census Designated Place (historical))
- Southgate
- Southridge Village
- Southside Highlands
- Southwest Village
- Spa (historical)
- Spadra
- Spangler
- Spanish Flat, Napa County
- Spanish Flat, El Dorado County
- Spanish Flat Resort
- Spanish Hills
- Spanish Ranch
- Spanish Ranch Mobile Home Park
- Sparkle
- Sparkville (historical)
- Sparr Heights
- Spear Creek Summer Home Tract
- Spellacy
- Spence
- Sperry
- Spicer City
- Spinks Corner
- Spoonbill
- Spreckels
- Spreckels Junction
- Sprekelsville
- Spring Creek
- Spring Gap
- Spring Garden
- Spring Hill
- Spring Valley, El Dorado County
- Spring Valley, San Diego County
- Spring Valley Lake
- Springfield
- Springfield Meadows
- Springville, Tulare County
- Springville, Ventura County
- Spruce (historical)
- Spyrock
- Squab
- Squabbletown
- Squaw Hill
- Squaw Valley
- Squeaky Springs (historical)
- Squirrel Creek (historical)
- Squirrel Mountain Valley
- Stafford (historical)
- Stalder
- Stallion Meadow Mobile Home Park
- Stallion Oaks
- Stallion Springs
- Standard
- Standard Avenue Mobile Home Park
- Standiford
- Stanfield Hill
- Stanford
- Stanford (historical)
- Stanford Hills
- Stanford Park
- Stanford Weekend Acres
- Stanislaus
- Stanley
- Stanton
- Starbright Acres
- Starlite Mobile Estates
- Stateline
- Stauffer
- Stedman
- Steel Canyon Resort
- Steele (historical)
- Stege
- Stegeman
- Stent
- Steuben Place
- Stevens
- Stevenson Ranch
- Stevinson
- Stewart (historical)
- Stewarts Point
- Stewartville
- Stinson Beach
- Stirling City
- Stirling Junction
- Stockton, San Diego County
- Stockton, San Joaquin County
- Stoil
- Stomar
- Stone Place
- Stonegate Village
- Stonehurst
- Stoneman
- Stoneridge Mobile Home Park
- Stonestown
- Stony Creek Village
- Stony Point
- Stonyford
- Storey
- Storrie
- Stout
- Strand (historical)
- Stratford
- Strathearn
- Strathmore
- Strawberry, El Dorado County
- Strawberry, Marin County
- Strawberry, Tuolumne County
- Strawberry Manor
- Strawberry Park
- Strawberry Valley
- Strickland Acres
- Striplin (historical)
- Stronetta
- Strongs Mobile Village
- Stuart
- Studebaker
- Studio City
- Styx
- Subaco
- Subeet
- Sucker Flat
- Sucro
- Sucrosa (historical)
- Sugar (historical)
- Sugar Pine
- Sugarfield
- Sugarloaf
- Sugarloaf Mountain Park
- Sugarloaf Saw Mill
- Sugarloaf Village
- Sugarpine
- Suisun
- Sullivan
- Sullivan (historical)
- Sulphur Springs, Los Angeles County
- Sulphur Springs, Ventura County
- Sulphur Springs (historical)
- Sultana
- Summer Home
- Summerhome Park
- Summerland
- Summers (historical)
- Summerset Mobile Home Estates
- Summit
- Summit (historical)
- Summit City (historical)
- Summit Terrace
- Summit Village
- Sumner Hill
- Sun City
- Sun City (historical) (Sun City Census Designated Place (historical))
- Sun Valley
- Sun Village (Sun Village Census Designated Place)
- Suncrest
- Sundance Mobile Home Park
- Sunfair
- Sunfair Heights
- Sunkist
- Sunkist Gardens
- Sunland, Los Angeles County
- Sunland, Tulare County
- Sunland (historical)
- Sunny Acres Trailer Park
- Sunny Hills
- Sunny Hills Estates Mobile Home Park
- Sunny Slopes (Sunny Slopes Census Designated Place)
- Sunny Vista
- Sunnybrook
- Sunnymead
- Sunnyside, Fresno County
- Sunnyside, Placer County
- Sunnyside, San Diego County
- Sunnyside, Tehama County
- Sunnyside, San Francisco County
- Sunnyside (historical)
- Sunnyside Estates
- Sunnyside-Tahoe City
- Sunnyslope, Butte County
- Sunnyslope, Riverside County
- Sunnyvale
- Sunol
- Sunol-Midtown
- Sunrise
- Sunrise Heights
- Sunrise Mobile Home Park
- Sunrise Vista
- Sunset Beach
- Sunset Cliffs
- Sunset District
- Sunset Hills
- Sunset Mobile Home Park
- Sunset Palisades
- Sunset Point
- Sunset Ridge
- Sunset Terrace Mobile Home Park
- Sunset View
- Sunshine Camp
- Sunsweet
- Suntown
- Surf
- Surf and Sand Mobile Home Park
- Surfside
- Susanville
- Suscol
- Sutter
- Sutter Creek
- Sutter Hill
- Suval
- Sveadal
- Swall
- Swall Meadows (Swall Meadows Census Designated Place)
- Swansea
- Swanston
- Swanton
- Swedes Flat (historical)
- Sweeneys Crossing
- Sweetland
- Swingle
- Sycamore
- Sycamore Cove
- Sycamore Creek Mobile Home Park
- Sycamore Flat
- Sycamore Hills
- Sycamore Springs, Riverside County
- Sycamore Springs, San Luis Obispo County
- Sydney Town (historical)
- Sykes
- Sylmar
- Sylvan Lodge
- Sylvan Meadows
- Sylvan Park
- Sylvandale (historical)
- Sylvia Park
- Taft
- Taft Heights
- Taft Mosswood
- Taggin Wagon Mobile Home Park
- Tagus
- Tahoe City
- Tahoe Estates
- Tahoe Keys
- Tahoe Marina Estates
- Tahoe Park
- Tahoe Pines
- Tahoe Valley
- Tahoe Vista
- Tahoe Woods
- Tahoma
- Tahoma Meadows
- Taison (historical)
- Tajiguas
- Talbert
- Talbot (historical)
- Talc (historical)
- Talich
- Tall Timber Camp
- Tallac Village
- Talmage
- Talmont
- Talus
- Tamalpais Valley
- Tamalpais Valley Junction
- Tamalpais-Homestead Valley
- Tamarack
- Tamarack (historical)
- Tamarack Springs
- Tambo
- Tan Oak Park
- Tanbark Flats
- Tancred
- Tangair
- Tara Hills
- Tara Mobile Estates
- Tarke
- Tarpey
- Tarpey Village
- Tarzana
- Tassajara
- Tassajara Hot Springs
- Tatu
- Taurusa
- Taylor
- Taylor Junction
- Taylorville (historical)
- Teagle (historical)
- Teagueville (historical)
- Teakettle Junction
- Teal
- Tecate
- Tecopa
- Tehachapi
- Tejon Ranch
- Telegraph City
- Telegraph Hill
- Temecula
- Temecula Ranchos
- Temelec
- Temescal
- Temple City
- Templeton
- Tennant (historical)
- Tent City (historical)
- Terese (historical)
- Terminous
- Ternez (historical)
- Terra Bella
- Terra Cotta
- Terra Linda
- Terra Lindo
- Teviston (Teviston Census Designated Place)
- The Cedars
- The Colony Mobile Home Park
- The Crossings
- The Forks
- The Gables
- The Garden Mobile Home Park
- The Greenhouse
- The Grove
- The Highlands
- The Homestead
- The Marina
- The Meadows
- The Mesa
- The Muirlands
- The Oaks, Los Angeles County
- The Oaks, Mendocino County
- The Oaks, Nevada County
- The Palms Trailer Park
- The Pines
- The Pines (historical)
- The Plaza
- The Shores of Poker Flat
- The Views Mobile Home Park
- The Village
- The Willows, San Diego County
- The Willows, Santa Cruz County
- The Willows, San Mateo County
- The Woods Trailer Park
- Thenard
- Thermal
- Thermalito
- Thoman
- Thomas Lane
- Thomas Mountain
- Thomas Place
- Thomasson
- Thompson
- Thorn
- Thornton
- Thousand Oaks, Alameda County
- Thousand Oaks, Ventura County
- Thousand Palms
- Three Arch Bay
- Three Crossing
- Three Points, Los Angeles County
- Three Rivers
- Three Rocks
- Thunderbird Mobile Home Park
- Thunderbird Ranches
- Thurin
- Thyle
- Tiber
- Tiburon
- Tierra Buena
- Tierra Buena (historical) (Tierra Buena Census Designated Place (historical))
- Tierra del Sol
- Tierrasanta
- Tiffin (historical)
- Tiger Lily
- Tiki Mobile Village
- Tillman (historical)
- Timba
- Timber Trails, Calaveras County
- Timber Trails, Nevada County
- Timberland
- Timbuctoo
- Tin City
- Tin Shack (historical)
- Tippecanoe (historical)
- Tipton
- Tisdale
- Titus
- Toadtown
- Tobin
- Tocaloma
- Todd Place
- Todd Valley
- Tokay
- Toland Landing
- Tolenas
- Tollhouse
- Tomales
- Toms Place
- Tomspur
- Toners Place
- Tony Ziro Mobile Living Mobile Home Park
- Tonyville
- Tooleville (Tooleville Census Designated Place)
- Toolville
- Toomey
- Top of the World
- Topanga
- Topanga Beach
- Topanga Oaks
- Topanga Park
- Topaz
- Tormey
- Toro Canyon
- Torrance
- Tortuga
- Tosco (historical)
- Towle
- Town and Country Mobile Home Park, San Diego County
- Town and Country Trailer Estates
- Town and Country Villa
- Town and Country Village
- Town Talk
- Toyanza Subdivision
- Toyon
- Trabuco Canyon
- Trabuco Highlands
- Tracy
- Tradewinds Mobile Home Park
- Tradewinds Trailer Village
- Tragedy Spring (historical)
- Trailer Haven
- Trailer Tel Mobile Home Park
- Trails End Mobile Home Park
- Trancas
- Tranquillity
- Travelodge Mobile Home Park
- Traver
- Travis Field
- Treasure Island Mobile Home Park, Orange County
- Treasure Island Mobile Home Park, San Mateo County
- Tree Mobile Home Park
- Trent
- Trenton
- Tres Pinos
- Trescape (historical)
- Trestle Glen
- Trevarno
- Treves (historical)
- Triangle Court
- Trico Mobile Estates
- Trigo
- Trigo (historical)
- Trimmer
- Triunfo Corner
- Trocha
- Trona
- Trousdale Estates
- Trowbridge
- Troy
- Truckee
- Truckhaven
- Trull
- Truth Home
- Tudor
- Tujunga
- Tulare
- Tulelake
- Tuolumne
- Tuolumne City
- Tuolumne City (historical)
- Tupman
- Turk
- Turlock
- Turnbull (historical)
- Turner, San Joaquin County
- Turner, Sonoma County
- Tustin
- Tustin Village Mobile Home Club
- Tuttle
- Tuttletown
- Twain Harte
- Twain Harte Valley
- Twentynine Palms
- Twentynine Palms Base (historical) (Twentynine Palms Base Census Designated Place (historical))
- Twin Bridges
- Twin Buttes
- Twin Cities
- Twin Creeks
- Twin Lakes, Kern County
- Twin Lakes, Lake County
- Twin Lakes, Los Angeles County
- Twin Lakes, Santa Cruz County
- Twin Lakes Mobile Estates
- Twin Oaks, Kern County
- Twin Oaks, San Diego County
- Twin Peaks
- Twin Peaks Estates
- Twin Pines
- Twin Rocks
- Twin View Terrace Mobile Home Park
- Two Harbors
- Two Rivers
- Two Rock
- Tyler (historical)
- Tylers Corner
- Tyndall Landing
- Tyrone
- Ukiah
- Ukiah Rancheria
- Ulatis Park
- Ulmar
- Ultra
- Una
- Underwood Park
- Union, Napa County
- Union, San Luis Obispo County
- Union City
- Union Hill, Nevada County
- Union Hill, Sierra County
- Union Landing
- Union Mills
- Unionville (historical)
- Universal City
- University City
- University Heights, San Bernardino County
- University Heights, San Diego County
- University Heights, San Mateo County
- University Village, San Bernardino County
- University Village, Alameda County
- Upland
- Upper B Street
- Upper Lake
- Uptown
- Vacaville
- Val Verde
- Valencia
- Valinda
- Valle Vista
- Vallejo
- Valley Center
- Valley Springs
- Valley Village
- Van Nuys
- Vandenberg Air Force Base
- Vandenberg Village
- Ventura, Santa Clara County
- Ventura, Ventura County
- Verona
- Victorville
- View Park-Windsor Hills
- Villa Park
- Villa Seville Mobile Home Park
- Vinboy Trailer Park
- Vincent, Los Angeles County
- Vine Hill
- Vineyard
- Vintage Oaks
- Visalia
- Visitacion Valley
- Vista
- Vista Santa Rosa
- Waldon, Contra Costa County
- Walnut
- Walnut Creek
- Walnut Grove
- Walnut Heights
- Walnut Hills Mobile Home Park
- Walnut Park
- Walnut Ridge
- Walnut Trailer Villa
- Walong
- Walsh Landing
- Walsh Station
- Walter Springs
- Walteria
- Walthal
- Walton Place (historical)
- Waltz
- Wanda (historical)
- Wanhala
- Warm Springs, San Bernardino County
- Warm Springs District
- Warm Springs Mobile Home Park
- Warmcastle Mobile Home Park
- Warner
- Warner Springs
- Warnerville
- Warren (historical), Kern County
- Wasco
- Washington
- Washoe
- Waterford
- Waterford Village
- Waterloo
- Watermans Corner
- Watson
- Watson Junction
- Watsonville
- Watsonville Junction
- Watts
- Waukena
- Waverly Park
- Wawona
- Wayne
- Weaverville
- Webster
- Weed
- Weedpatch
- Weeds Point
- Weeks Poultry Colony (historical)
- Weeks Tract
- Weimar
- Weisel
- Welby
- Weldon
- Weldons
- Wellington Heights
- Wellsona
- Wene'me (historical)
- Werner
- West Alpaugh (historical)
- West Anaheim
- West Anaheim Junction
- West Arcadia
- West Athens
- West Baker (historical)
- West Bishop
- West Butte
- West Carson
- West Colton
- West Covina
- West End, San Bernardino County
- West End, Alameda County
- West Glendale
- West Grove Mobile Home Estates
- West Hartley
- West Highlands
- West Hills
- West Hollywood
- West LA
- West Linda
- West Los Angeles
- West Manteca
- West March
- West Menlo Park
- West Modesto
- West Oakland
- West Park
- West Point
- West Portal
- West Puente Valley
- West Rancho Dominguez
- West Sacramento
- West Sacramento Trailer Park
- West Venida
- West Village
- West Whittier
- West Whittier-Los Nietos
- Westborough
- Westbrae
- Westchester
- Westend
- Western Addition
- Westfield
- Westgate
- Westgate Heights
- Westhaven
- Westhaven-Moonstone
- Westlake, San Mateo County
- Westlake, Los Angeles County
- Westlake Village
- Westley
- Westminster
- Westminster Mobile Home Park
- Westmont
- Westmorland
- Westport
- Westridge
- Westside
- Westville
- Westwind Estates
- Westwinds Lodge Mobile Home Park
- Westwood
- Westwood Highlands
- Westwood Park
- Westwood Village
- Westwood, Los Angeles
- Wheatland
- Wheaton Springs
- Wheatons
- Wheeler
- Wheeler Ridge
- Wheeler Springs
- Wherry Housing
- Whiskey Springs
- Whisky Falls
- Whispering Pines, Lake County
- Whispering Pines, San Diego County
- White Hall
- White Heather
- White Oak Estates
- White Pines
- White River
- White River Summer Home Tract
- White Rock
- White Spot
- White Water
- White Wolf
- Whitehawk
- Whitesboro
- Whitley Gardens
- Whitley Heights
- Whitley Manor Mobile Home Park
- Whitlock Place
- Whitmore Hot Springs
- Whitney
- Whitney Portal
- Whittier
- Whittier Junction
- Wible Orchard
- Wicks Corner
- Wiest
- Wikiup
- Wilbur Springs
- Wild Bill Place
- Wild Crossing
- Wildasin
- Wilder Place
- Wildflower
- Wildhorse Canyon
- Wildomar
- Wildwood, Los Angeles County
- Wildwood, Santa Cruz County
- Wildwood (historical)
- Wilfred
- Wilkerson
- Willaura Estates
- Williams
- Williams (historical)
- Willis Palms
- Willits
- Willota
- Willow Brook
- Willow Creek
- Willow Glen
- Willow Glen (historical)
- Willow Glenn Mobile Home Park
- Willow Point
- Willow Springs, Kern County
- Willow Springs, Mono County
- Willow Springs, Tuolumne County
- Willow Valley
- Willowbrook
- Willowick Royal Mobile Home Park
- Willows
- Willowville
- Wilmar
- Wilmington
- Wilseyville
- Wilsie
- Wilson
- Wilson Corner
- Wilson Grove
- Wilson Place
- Wilsona (historical)
- Wilsona Gardens
- Wilsonia
- Wilton
- Wimp
- Winchester
- Winchester Ranch Mobile Home Park
- Windsor
- Windsor Crest
- Windsor Hills
- Windsor Square
- Wineland
- Wingfoot
- Wingo
- Winnetka
- Winter Gardens, Los Angeles County
- Winter Gardens, San Diego County
- Winterhaven
- Winterhaven Village
- Winters
- Winters Mobile Home Park
- Wintersburg
- Winterwarm
- Winton
- Wister
- Witter Springs (historical)
- Wofford Heights
- Wokodot (historical)
- Wolf, Fresno County
- Wolf, Nevada County
- Wolforts (historical)
- Wonderland Mobile Home Park
- Wood Ranch
- Wood Vista
- Woodacre
- Woodbridge
- Woodcrest
- Woodford
- Woodfords
- Woodlake, San Joaquin County
- Woodlake, Tulare County
- Woodlake Junction
- Woodland
- Woodland Acres
- Woodland Hills
- Woodlands
- Woodlands (Woodlands Census Designated Place)
- Woodlands Mobile Home Park
- Woodleaf, Napa County
- Woodleaf, Yuba County
- Woodman
- Woods Crossing
- Woodside
- Woodside Glens
- Woodside Highlands
- Woodside Village
- Woodstock
- Woodville, Tulare County
- Woodville, Marin County
- Woodward
- Woodworth
- Woody
- Woolsey
- Woolsey Flat
- Workman
- Worth
- Worthing (historical)
- Wrightwood
- Wrigley
- Wunpost
- Wyandotte
- Wycoff (historical)
- Wyeth
- Wyldewood
- Wynola
- Wyo
- Wyvernwood
- Yaldora
- Yankee Hill
- Yankee Jims
- Yarmouth (historical)
- Yermo
- Yettem
- Yokohl
- Yolano
- Yolo
- Yorba
- Yorba Linda
- Yorkville
- Yosemite Forks
- Yosemite Junction
- Yosemite Lakes
- Yosemite Lakes Park
- Yosemite Valley
- Yosemite Village
- Yosemite West
- You Bet
- Youngs Hill (historical)
- Youngstown
- Yountville
- Yreka
- Ysidora (historical)
- Yuba (historical)
- Yuba City
- Yuba Mobile Home Park
- Yuba Pass
- Yucaipa
- Yucca Grove
- Yucca Inn
- Yucca Valley
- Yulupa (historical)
- Yuman (historical)
- Yupu (historical)
- Zamora
- Zante
- Zayante
- Zediker
- Zee Estates
- Zentner
- Zinfandel
- Zurich
- Zuver
- Zzyzx