List of places in California (O)

This page aims to provide a non-exhaustive list of populated places and geographical locations within the state of California, specifically focusing on those whose names begin with the letter "O." This list includes cities, towns, unincorporated communities, and notable landmarks.

• Oakdale: A city in Stanislaus County, known for its cowboy heritage and agriculture.

• Oakland: A major city in the San Francisco Bay Area, known for its diverse culture, port, and vibrant arts scene.

• Oakley: A city in Contra Costa County, experiencing rapid growth as a suburb of the Bay Area.

• Oakhurst: A census-designated place (CDP) in Madera County, serving as a gateway to Yosemite National Park.

• Oak Park (Los Angeles): An unincorporated community in Ventura County, often considered part of the Greater Los Angeles Area.

• Oceanside: A coastal city in San Diego County, known for its beaches, harbor, and military presence at Camp Pendleton.

• Ocotillo: A small unincorporated community in Imperial County, located near the Mexican border.

• Oildale: An unincorporated community in Kern County, historically associated with the oil industry.

• Olancha: An unincorporated community in Inyo County, located in the Owens Valley.

• Old Station: An unincorporated community in Shasta County, located in the Lassen Volcanic National Park region.

• Olema: An unincorporated community in Marin County, located near Point Reyes National Seashore.

• Olivehurst: A census-designated place (CDP) in Yuba County.

• Omo Ranch: An unincorporated community in El Dorado County.

• Ontario: A city in San Bernardino County, a major transportation hub and part of the Inland Empire.

• Orange: A city in Orange County, known for its historic Old Towne district and Chapman University.

• Orange Cove: A city in Fresno County, located in the San Joaquin Valley.

• Oregon House: A census-designated place (CDP) in Yuba County.

• Orick: An unincorporated community in Humboldt County, located near Redwood National and State Parks.

• Orinda: A city in Contra Costa County, a wealthy suburb of the Bay Area known for its rolling hills and BART station.

• Orland: A city in Glenn County, located in the Sacramento Valley, known for its agriculture.

• Oro Grande: An unincorporated community in San Bernardino County.

• Orosi: A census-designated place (CDP) in Tulare County.

• Oroville: A city in Butte County, known for the Oroville Dam, one of the largest earth-filled dams in the United States.

• Oxnard: A city in Ventura County, a major agricultural center and home to a large naval base.