The Communities of
California (CA)

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
 

Notes: - Some communities no longer exist and have been marked with '(H)' to indicate that they are historic.
 
- When two (or more) communities share the same name, we give some kind of identifying location to help you pick.
 


O'BrienOhmOpal Cliffs
O'Byrnes FerryOhmer (H)Opegoi (H)
  Opelto (H)
O'NealsOil CityOpera Plaza
- Fresno CountyOil JunctionOphir
- Madera CountyOildaleOphir Hill Acres
  Opia (H)
O'Neil PlaceOjaiOpistopia (H)
 OjalaOpok (H)
Oak Bottom (H)Ojo De Agua De La CocheOptimo
Oak Creek Hills  
Oak Gardens EstatesOketo (H)Ora
 Okowvinjha (H)Orange
Oak GlenOkpam (H)Orange Avenue Junction
- Humboldt County Orange Center
- San Bernardino CountyOla (H)Orange Cove
- Butte CountyOlanchaOrange Glen
- Calaveras CountyOlcottOrange Heights
- San Diego CountyOld AdobeOrange Park Acres
- San Mateo CountyOld Bailey PlaceOrangehurst
- Santa Clara CountyOld Bretz MillOrangetree
- Sonoma CountyOld Chinatown (H)Orangevale
- Tulare CountyOld CorralOrangwood
- Yuba County (H)Old DaleOrchams
 Old Dickenson FerryOrchard
Oak Haven EstatesOld Dominion Mine (H)Orchard Camp (H)
Oak HillOld Felton 
 Old ForbestownOrcutt
Oak HillsOld Fort Jim- San Diego County
- Monterey CountyOld Fort Tejon- Santa Barbara County
- San Bernardino CountyOld Garlock 
- Los Angeles CountyOld GilroyOrdbend
- Napa CountyOld HilltownOrdway
 Old HoplandOre'q (H)
Oak Knoll HillsOld Hulbert PlaceOregon Bar (H)
Oak KnollsOld Mammoth 
 Old Ornbaun Hot SpringsOregon City
Oak ParkOld Pino- Butte County
- Sacramento CountyOld Point Comfort 
- San Luis Obispo CountyOld Red Rock PlaceOregon Gulch (H)
- Ventura CountyOld RiverOregon House
 Old San DiegoOrella (H)
Oak Park EstatesOld StationOrestaco (H)
Oak Ridge Village Orestimba
Oak RunOld TownOrford
Oak Tree Village- Kern CountyOrick
 - Marin CountyOriental
Oak Valley- Santa Barbara CountyOrinda
- Ventura County- Ventura CountyOrinda Park
- Yuba County- San Diego CountyOrinda Village
  Orion (H)
Oak ViewOld TowneOrita
Oak VillageOleanderOrland
OakbarOlemaOrleans
OakdaleOleo (H)Orleans Flat
 OleumOrlem (H)
OakhurstOlgaOrmand
- Fresno County (H)Olig (H)Oro Fino
- Madera County Oro Grande
- Alameda CountyOlindaOro Loma (H)
- Yuba County (H)- Orange County (H)Oroleve
 - Shasta CountyOrosi
Oakley- Orange CountyOroville
Oakmont Oroville East
OakridgeOlive HillOroville Junction
Oakridge RanchesOlive Springs (H)Orr's
OaksOlive ViewOrris
OakvilleOlivehainOrrs Springs
OakwoodOlivehurst 
 OlivenhainOrtega
OasisOliver (H)- San Joaquin County (H)
- Mendocino CountyOliveto- Santa Barbara County (H)
- Mono CountyOlivewood 
- Riverside CountyOlney (H)Ortonville
 Ololopa (H)Orwood
Oat HillOlompaliOrwood Tract
 Olposel (H) 
ObanOlsen CrossingOsacalis (H)
Oberg (H)Olulato (H)Osborne
ObieOlumpali (H)Osbourne
Obie JunctionOlympiaOso (H)
ObregonOlympia GladeOstrom (H)
 OlympicOswald
OccidentalOlympic Heights 
Ocean BeachOlympic ValleyOtai (H)
Ocean Hills Otaki (H)
Ocean ParkOmaha HeightsOtay
Ocean RoarOmaxtux (H)Otay Mesa
 OmegaOtenashmoo (H)
Ocean ViewOmiraOtey's Ranch
- Los Angeles CountyOmo RanchOteys Sierra Village (H)
- Orange CountyOmochumnesOtterbein
- San Francisco CountyOmus 
- Sonoma County Outingdale
 Onbi (H)Outlet
Ocean View EstatesOnchomo (H)Outpost Estates
OceanaOne Hundred Palms 
OceanoOneidaOval
Oceano BeachOneontaOvejo (H)
OceansideOnkot (H)Overlook
Oceanview  
Ochoyos (H)OnoOwensville (H)
Ockenden- San Bernardino CountyOwenyo (H)
Ocotillo- Shasta CountyOwl
Ocotillo Wells  
OctolOnomio (H)Oxalis
 OntarioOxford
Odd Fellows ParkOnyxOxford Mill
Odessa (H) Oxnard
 Oo-moo-chah (H)Oxnard Beach
Ogilby Oxnard Shores
- Imperial County (H) Oxy
   
Ogilby (H) Ozena
- San Diego County Ozol