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The Communities of California (CA)



Select by first two letters of name

OA OB OC OD OG OH
OI OJ OK OL OM ON
OO OP OR OS OT OU
OV OW OX OZ    
 

Notes about our Index:

  • 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 try to give some kind of location to help you pick.
 

O'Brien [Shasta County]

O'Byrnes Ferry [Calaveras County]

O'Neals [Fresno County]

O'Neals [Madera County]

O'Neil Place [Mendocino County]

O'rekw
See: Arekw


Oak
See: Happy Valley

Oak Bottom [Shasta County] (H)

Oak Creek Hills [El Dorado County]

Oak Gardens Estates [Tuolumne County]

Oak Glen [Humboldt County]

Oak Glen [San Bernardino County]

Oak Grove [Butte County]

Oak Grove [Calaveras County]

Oak Grove [San Diego County]

Oak Grove [San Mateo County]

Oak Grove [Santa Clara County]

Oak Grove [Sonoma County]

Oak Grove [Tulare County]

Oak Grove [Yuba County] (H)

Oak Haven Estates [Riverside County]

Oak Highlands [Shasta County]
See: Happy Valley

Oak Hill [Los Angeles County]

Oak Hills [Monterey County]

Oak Hills [San Bernardino County]

Oak Knoll [Los Angeles County]

Oak Knoll [Napa County]

Oak Knoll Hills [Santa Clara County]

Oak Knolls [Santa Barbara County]

Oak Park [Sacramento County]

Oak Park [San Luis Obispo County]

Oak Park [Ventura County]

Oak Park Estates [Calaveras County]

Oak Ridge Village [El Dorado County]

Oak Run [Shasta County]

Oak Tree Village [El Dorado County]

Oak Valley [Ventura County]

Oak Valley [Yuba County]

Oak View [Ventura County]

Oak Village [Ventura County]

Oakbar [Siskiyou County]

Oakdale [Stanislaus County]

Oakhurst [Fresno County] (H)

Oakhurst [Madera County]

Oakland [Alameda County]

Oakland [Yuba County] (H)

Oakley [Contra Costa County]

Oakmont [Sonoma County]

Oakridge [San Joaquin County]

Oakridge Ranches [Riverside County]

Oaks [San Luis Obispo County]

Oakville [Napa County]

Oakwood [Los Angeles County]

Oasis [Mendocino County]

Oasis [Mono County]

Oasis [Riverside County]

Oat Hill [Napa County]


Oban [Los Angeles County]

Oberg [Los Angeles County] (H)

Obie [Shasta County]

Obie Junction [Siskiyou County]

Obregon [Imperial County]


Occidental [Sonoma County]

Ocean Beach [San Diego County]

Ocean Hills [San Diego County]

Ocean Park [Los Angeles County]

Ocean Roar [Marin County]

Ocean View [Los Angeles County]

Ocean View [Orange County]

Ocean View [San Francisco County]

Ocean View [Sonoma County]

Ocean View Estates [Orange County]

Oceana [San Diego County]

Oceano [San Luis Obispo County]

Oceano Beach [San Luis Obispo County]

Oceanside [San Diego County]

Oceanview [San Francisco County]

Ochoyos [Santa Cruz County] (H)

Ockenden [Fresno County]

Ocotillo [Imperial County]

Ocotillo Wells [San Diego County]

Octol [Tulare County]


Odd Fellows Park [Sonoma County]

Odessa [Kings County] (H)


Ogilby [Imperial County] (H)

Ogilby [San Diego County]


Ohio City
See: Buckeye

Ohm [Stanislaus County]

Ohmer [Contra Costa County] (H)


Oil City [Kern County]

Oil Junction [Kern County]

Oildale [Kern County]


Ojai [Ventura County]
Other names:
Nordhoff

Ojala [Ventura County]

Ojo De Agua De La Coche [Santa Clara County]


Oketo [Humboldt County] (H)

Okowvinjha [Los Angeles County] (H)

Okpam [Sutter County] (H)


Ola [Sutter County] (H)

Olancha [Inyo County]

Olcott [Solano County]

Old Adobe [San Luis Obispo County]

Old Bailey Place [Mendocino County]

Old Bretz Mill [Fresno County]

Old Chinatown [Los Angeles County] (H)

Old Corral [Madera County]

Old Creek [San Luis Obispo County]

Old Dale [San Bernardino County]

Old Dickenson Ferry [Merced County]

Old Dominion Mine [San Bernardino County] (H)

Old Felton [Santa Cruz County]

Old Forbestown [Butte County]

Old Fort Jim [El Dorado County]

Old Fort Tejon [Kern County]

Old Garlock [Kern County]

Old Gilroy [Santa Clara County]

Old Hilltown [Monterey County]

Old Hopland [Mendocino County]

Old Hulbert Place [Modoc County]

Old Mammoth [Mono County]
Other names:
Mammoth City

Old Ornbaun Hot Springs [Mendocino County]

Old Pino [El Dorado County]

Old Point Comfort [Los Angeles County]

Old Red Rock Place [Mendocino County]

Old River [Kern County]

Old San Diego [San Diego County]

Old Station [Shasta County]

Old Town [Kern County]

Old Town [Marin County]

Old Town [Santa Barbara County]

Old Town [Ventura County]

Old Town San Diego [San Diego County]

Old Towne [Kern County]

Oleander [Fresno County]

Olema [Marin County]

Oleo [Orange County] (H)

Oleta
See: Fiddletown

Oleum [Contra Costa County]

Olga [Los Angeles County]

Olig [Kern County] (H)

Olinda [Orange County] (H)

Olinda [Shasta County]

Olive [Orange County]

Olive Hill [Yuba County]

Olive Springs [Santa Cruz County] (H)

Olive View [Los Angeles County]

Olivehain [San Diego County]

Olivehurst [Yuba County]

Olivenhain [San Diego County]

Oliver [Yuba County] (H)

Oliveto [Sonoma County]

Olivewood [Los Angeles County]

Olney [Shasta County] (H)

Ololopa [Butte County] (H)

Olompali [Marin County]

Olposel [Lake County] (H)

Olsen Crossing [Humboldt County]

Olulato [Solano County] (H)

Olumpali [Marin County] (H)

Olympia [Santa Cruz County]

Olympia Glade [Nevada County]

Olympic [Los Angeles County]

Olympic Heights [Nevada County]

Olympic Valley [Placer County]


Omaha Heights [Los Angeles County]

Omaxtux [Santa Barbara County] (H)

Omega [Nevada County]

Omira [Lassen County]

Omo Ranch [El Dorado County]

Omochumnes [Sacramento County]

Omus [Sonoma County]


Onbi [Santa Cruz County] (H)

Onchomo [El Dorado County] (H)

One Hundred Palms [Riverside County]

One Mule Town
See: Muletown

One Wagon Town
See: Churntown

Oneida [Sierra County]

Oneonta [San Diego County]

Onkot [Ventura County] (H)

Ono [San Bernardino County]

Ono [Shasta County]

Onomio [Santa Barbara County] (H)

Ontario [San Bernardino County]

Onyx [Kern County]


Oo-moo-chah [Sacramento County] (H)


Opal Cliffs [Santa Cruz County]

Opegoi [Humboldt County] (H)

Opelto [Sacramento County] (H)

Opera Plaza [San Francisco County]

Ophir [Placer County]

Ophir Hill Acres [Nevada County]

Opia [Santa Barbara County] (H)

Opistopia [Santa Barbara County] (H)

Opok [El Dorado County] (H)

Optimo [Butte County]


Ora [Fresno County]

Orange [Orange County]

Orange Avenue Junction [Los Angeles County]

Orange Center [Riverside County]

Orange Cove [Fresno County]

Orange Glen [San Diego County]

Orange Heights [San Bernardino County]

Orange Park Acres [Orange County]

Orangehurst [Orange County]

Orangetree [Orange County]

Orangevale [Sacramento County]

Orangwood [Los Angeles County]

Orchams [Santa Barbara County]

Orchard [Sonoma County]

Orchard Camp [Los Angeles County] (H)

Orcutt [San Diego County]

Orcutt [Santa Barbara County]

Ordbend [Glenn County]

Ordway [Riverside County]

Ore'q [Humboldt County] (H)

Oregon Bar [Calaveras County] (H)

Oregon City
See: Campo Seco

Oregon City [Butte County]
Other names:
Hengy
Bloomingdale

Oregon Gulch [Shasta County] (H)

Oregon House [Yuba County]

Orella [Santa Barbara County] (H)

Orestaco [San Benito County] (H)

Orestimba [Stanislaus County]

Orford [San Joaquin County]

Orick [Humboldt County]

Oriental [Glenn County]

Orinda [Contra Costa County]

Orinda Park [Contra Costa County]

Orinda Village [Contra Costa County]

Orion [Kings County] (H)

Orita [Imperial County]

Orland [Glenn County]

Orleans [Humboldt County]

Orleans Flat [Nevada County]

Orlem [Tulare County] (H)

Ormand [Riverside County]

Oro Fino [Siskiyou County]

Oro Grande [San Bernardino County]
Other names:
Halleck

Oro Loma [Fresno County] (H)

Oroleve [Butte County]

Orosi [Tulare County]

Oroville [Butte County]

Oroville East [Butte County]

Oroville Junction [Butte County]

Orr's [Mendocino County]

Orris [Tulare County]

Orrs Springs [Mendocino County]

Ortega [San Joaquin County] (H)

Ortega [Santa Barbara County] (H)

Ortonville [Ventura County]

Oruk
See: Arekw

Orwood [Contra Costa County]

Orwood Tract [Contra Costa County]


Osacalis [Santa Cruz County] (H)

Osborne [Shasta County]

Osbourne [Los Angeles County]

Oso [Yuba County] (H)

Ostrom [Yuba County] (H)

Oswald [Sutter County]


Otai [San Diego County] (H)

Otaki [Butte County] (H)

Otay [San Diego County]

Otay Mesa [San Diego County]

Otenashmoo [Santa Barbara County] (H)

Otey's Ranch [Siskiyou County]

Oteys Sierra Village [Inyo County] (H)

Otterbein [Los Angeles County]


Outingdale [El Dorado County]

Outlet [Mendocino County]

Outpost Estates [Los Angeles County]


Oval [Tulare County]

Ovejo [Madera County] (H)

Overlook [San Diego County]


Owensville [Inyo County] (H)

Owenyo [Inyo County] (H)
Other names:
New Owenyo

Owl [Riverside County]


Oxalis [Fresno County]

Oxford [Solano County]

Oxford Mill [Sierra County]

Oxnard [Ventura County]

Oxnard Beach [Ventura County]

Oxnard Shores [Ventura County]

Oxy [San Bernardino County]


Ozena [Ventura County]

Ozol [Contra Costa County]
 

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This page was last modified/updated: 09 Mar 2024