The Communities of
California (CA)

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'Brien	Oceana	Olive Hill	Orella (H)
O'Byrnes Ferry	Oceano	Olive Springs (H)	Orestaco (H)
O'Neals	Oceano Beach	Olive View	Orestimba
O'Neil Place	Oceanside	Olivehurst	Orford
	Oceanview	Olivenhain	Orick
Oak Bottom (H)	Ochoyos (H)	Oliver (H)	Orinda
Oak Creek Hills	Ockenden	Oliveto	Orinda Village
Oak Gardens Estates	Ocotillo	Ololopa (H)	Orion (H)
	Ocotillo Wells	Olompali	Orita
Oak Glen	Octol	Olposel (H)	Orland
- Humboldt County		Olsen Crossing	Orleans
- San Bernardino County	Odd Fellows Park	Olulato (H)	Orleans Flat
- Butte County	Odessa (H)	Olumpali (H)	Orlem (H)
- Calaveras County		Olympia	Ormand
- San Diego County	Ogilby (H)	Olympia Glade	Oro Fino
- Santa Clara County		Olympic	Oro Grande
- Tulare County	Ohm	Olympic Heights	Oro Loma
- Yuba County (H)	Ohmer (H)	Olympic Valley	Oroleve
			Orosi
Oak Hill	Oil City	Omaha Heights	Oroville
	Oil Junction	Omaxtux (H)	Oroville East
Oak Hills	Oildale	Omega	Oroville Junction
- Monterey County		Omira	Orris
- San Bernardino County	Ojai	Omo Ranch	Orrs Springs
- Los Angeles County	Ojala	Omochumnes
- Napa County	Ojo De Agua De La Coche	Omus	Ortega
			- San Joaquin County
Oak Knolls	Oketo (H)	Onbi (H)	- Santa Barbara County
	Okowvinjha (H)	Onchomo (H)
Oak Park	Okpam (H)	One Hundred Palms	Orwood
- Sacramento County		Onkot (H)	Orwood Tract
- San Luis Obispo County	Ola (H)
- Ventura County	Olancha	Ono	Osacalis (H)
	Olcott	- San Bernardino County	Osborne
Oak Ridge Village	Old Adobe	- Shasta County	Osbourne
Oak Run	Old Bailey Place		Ostrom
Oak Tree Village	Old Bretz Mill	Ontario	Oswald
	Old Chinatown (H)	Onyx
Oak Valley	Old Corral		Otai (H)
- Ventura County	Old Dale	Oo-moo-chah (H)	Otaki (H)
- Yuba County	Old Dickenson Ferry		Otay
	Old Dominion Mine (H)	Opal Cliffs	Otay Mesa
Oak Village	Old Forbestown	Opegoi (H)	Otenashmoo (H)
Oakbar	Old Fort Jim	Opelto (H)	Oteys Sierra Village
Oakdale	Old Fort Tejon	Opera Plaza	Otterbein
	Old Garlock	Ophir
Oakhurst	Old Gilroy	Ophir Hill Acres	Outingdale
- Fresno County (H)	Old Hilltown	Opia (H)	Outlet
- Madera County	Old Hopland	Opistopia (H)	Outpost Estates
	Old Hulbert Place	Opok (H)
Oakley	Old Mammoth	Optimo	Oval
Oakmont	Old Ornbaun Hot Springs		Ovejo (H)
Oakridge	Old Pino	Ora	Overlook
Oakridge Ranches	Old Point Comfort	Orange
Oaks	Old Red Rock Place	Orange Avenue Junction	Owenyo (H)
Oakville	Old River	Orange Center	Owl
Oakwood	Old San Diego	Orange Cove
	Old Station	Orange Glen	Oxalis
Oasis		Orange Heights	Oxford
- Mendocino County	Old Town	Orange Park Acres	Oxford Mill
- Riverside County	- Kern County	Orangehurst	Oxnard
	- Marin County	Orangetree	Oxnard Beach
Oberg (H)	- Santa Barbara County	Orangevale	Oxnard Shores
Obie	- Ventura County	Orangwood	Oxy
Obie Junction		Orchams
Obregon	Old Towne	Orchard	Ozol
	Oleander	Orchard Camp (H)
Occidental	Olema	Orcutt
Ocean Beach	Oleo (H)	Ordbend
Ocean Hills	Oleum	Ordway
Ocean Park	Olga	Ore'q (H)
Ocean Roar	Olig (H)
		Oregon City
Ocean View	Olinda	- Butte County
- Los Angeles County	- Orange County (H)	- Calaveras County (H)
- Orange County	- Shasta County
- San Francisco County
- Sonoma County

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Last Modified: 22 Oct 2009

The Communities ofCalifornia (CA)

The Communities of
California (CA)