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57 relations: Alameda County, California, Alamo Oaks, California, Alamo, California, Antioch, California, Area code 209, Area code 707, Area codes 408 and 669, Area codes 415 and 628, Area codes 510 and 341, Area codes 916 and 279, Bay Point, California, Bethel Island, California, Blackhawk, California, Blackhawk-Camino Tassajara, California, Brentwood, California, Byron, California, California, California Public Utilities Commission, Canyon, California, Christie, California, Clayton, California, Clyde, California, Concord, California, Contra Costa County, California, Danville, California, Diablo, California, Discovery Bay, California, Dublin, California, East Bay (San Francisco Bay Area), Kilkare Woods, California, Knightsen, California, Lafayette, California, List of California area codes, Livermore, California, Marsh Creek Springs, California, Martinez, California, Moraga, California, Norris Canyon, California, Oakley, California, Orinda, California, Orwood, California, Pacheco, California, Pittsburg, California, Pleasant Hill, California, Pleasanton, California, Rock City, California, San Ramon, California, Saranap, California, Shore Acres, California, Sparkle, California, ..., Sunol, California, Telephone, Telephone numbering plan, Waldon, California, Walnut Creek, California, Walnut Heights, California, Werner, California. Expand index (7 more) »
Alameda County, California
Alameda County is a county in the state of California in the United States.
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Alamo Oaks, California
Alamo Oaks is an unincorporated community in Contra Costa County, California, United States.
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Alamo, California
Alamo is an unincorporated community and census-designated place (CDP) in Contra Costa County, California, in the United States.
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Antioch, California
Antioch (formerly, East Antioch, Smith's Landing, and Marshs Landing) is the second largest city in Contra Costa County, California, United States.
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Area code 209
Area code 209 is the California telephone area code that was split from area code 415 on October 26, 1957.
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Area code 707
Area code 707 is a California telephone area code that was split from area code 916 on March 1, 1959.
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Area codes 408 and 669
Area code 408 is a California telephone area code that was split from area code 415 as a flash-cut in 1959.
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Area codes 415 and 628
Area codes 415 and 628 are California telephone area codes for San Francisco and its northern suburbs in Marin County (across the Golden Gate Bridge), and the northeast corner of San Mateo County.
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Area codes 510 and 341
Area code 510 is a California telephone area code serving most of the East Bay.
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Area codes 916 and 279
Area code 916 is a California telephone area code that was one of the first three original area codes established in California in October 1947.
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Bay Point, California
Bay Point, formerly West Pittsburg, is a census-designated place located in the East Bay region of the San Francisco Bay Area in Contra Costa County, California.
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Bethel Island, California
Bethel Island (formerly known as Bethell, Bethell Ranch, Bethel Tract, Sand Mound Ranch, Sand Mound Tract) is a census-designated place (CDP) on Bethel Island in Contra Costa County, California, United States.
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Blackhawk, California
Blackhawk is an unincorporated master planned community and census-designated place located in Contra Costa County, California, United States, east of Danville and Oakland.
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Blackhawk-Camino Tassajara, California
Blackhawk-Camino Tassajara is a former census-designated place (CDP) in Contra Costa County, California, near the town of Danville.
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Brentwood, California
Brentwood is a city in Contra Costa County, California, United States.
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Byron, California
Byron is a census designated place (CDP) in Contra Costa County, California, United States.
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California
California is a state in the Pacific Region of the United States.
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California Public Utilities Commission
The California Public Utilities Commission (CPUC or PUC) is a regulatory agency that regulates privately-owned public utilities in the state of California, including electric power, telecommunications, natural gas and water companies.
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Canyon, California
Canyon, formerly known as Sequoya, is an unincorporated community located near the border of Contra Costa and Alameda counties, in the U.S. state of California.
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Christie, California
Christie is an unincorporated community in Contra Costa County, California, United States.
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Clayton, California
Clayton (formerly Clayton's and Claytonville, colloquially referred to as Blayton) is a city in Contra Costa County, California, United States.
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Clyde, California
Clyde is a census-designated place (CDP) in Contra Costa County, California, United States.
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Concord, California
Concord is the largest city in Contra Costa County, California.
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Contra Costa County, California
Contra Costa County is a county in the state of California in the United States.
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Danville, California
The Town of Danville is located in the San Ramon Valley in Contra Costa County, California.
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Diablo, California
Diablo is a census-designated place (CDP) in Contra Costa County, California, United States.
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Discovery Bay, California
Discovery Bay is a census-designated place (CDP) in eastern Contra Costa County, California in the United States, about 60 miles (97 km) from San Francisco.
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Dublin, California
Dublin (formerly, Amador and Dougherty's Station) is a suburban city of the East (San Francisco) Bay and Tri-Valley regions of Alameda County, California, United States.
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East Bay (San Francisco Bay Area)
The eastern region of the San Francisco Bay Area, commonly referred to as the East Bay, includes cities along the eastern shores of the San Francisco Bay and San Pablo Bay.
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Kilkare Woods, California
Kilkare Woods, also known as Kilcare Woods, is a small rural unincorporated community of about 773 people, relocationnow.com, U.S. Census Bureau, Census 2000.
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Knightsen, California
Knightsen (formerly Knightsen Station) is a census-designated place (CDP) in Contra Costa County, California, in the United States.
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Lafayette, California
Lafayette (formerly, La Fayette) is a city in Contra Costa County, California, United States.
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List of California area codes
This is a list of area codes in California with service territory and installation dates.
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Livermore, California
Livermore (formerly Livermores, Livermore Ranch, and Nottingham) is a city in Alameda County, California, in the United States.
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Marsh Creek Springs, California
Marsh Creek Springs is an unincorporated community in Contra Costa County, California, United States.
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Martinez, California
Martinez is a city in and the county seat of Contra Costa County, California, in the East Bay of the San Francisco Bay Area.
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Moraga, California
Moraga (incorporating the former communities of Moraga Town, Rheem, and Rheem Valley) is a suburban incorporated town located in Contra Costa County, California, United States, in the San Francisco Bay Area.
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Norris Canyon, California
Norris Canyon is a census-designated place in Contra Costa County, California.
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Oakley, California
Oakley is a city in Contra Costa County, California, United States.
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Orinda, California
Orinda is a city in Contra Costa County, California, United States.
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Orwood, California
Orwood is an unincorporated community in Contra Costa County, California, United States.
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Pacheco, California
Pacheco is a census-designated place (CDP) in Contra Costa County, California, United States, in the San Francisco Bay Area.
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Pittsburg, California
Pittsburg is an industrial city in Contra Costa County, California.
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Pleasant Hill, California
Pleasant Hill is a city in Contra Costa County, California, United States, in the East Bay of the San Francisco Bay Area.
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Pleasanton, California
Pleasanton is a city in Alameda County, California, incorporated in 1894.
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Rock City, California
Rock City is an Unincorporated community in Contra Costa County, California, United States.
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San Ramon, California
San Ramon is a city in Contra Costa County, California, United States, located 34 miles east of San Francisco, and within the San Ramon Valley.
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Saranap, California
Saranap (until 1913, Dewing Park) is a residential census-designated place (CDP) within central Contra Costa County, California.
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Shore Acres, California
Shore Acres is a suburban Unincorporated community in eastern Contra Costa County, California, in the San Francisco Bay Area, part of the Bay Point CDP and adjacent to the Concord Naval Weapons Station.
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Sparkle, California
Sparkle, also known as Sparkel, is an unincorporated community in Contra Costa County, California, United States.
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Sunol, California
Sunol (formerly, Sunolglen) is an unincorporated census-designated place (CDP) in Alameda County, California, United States.
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Telephone
A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.
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Telephone numbering plan
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints.
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Waldon, California
Waldon is a former census-designated place (CDP) in Contra Costa County, California, United States.
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Walnut Creek, California
Walnut Creek is a city in Contra Costa County, California, United States, located in the East Bay region of the San Francisco Bay Area, about east of the city of Oakland.
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Walnut Heights, California
Walnut Heights is an affluent unincorporated community in Contra Costa County, California, United States.
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Werner, California
Werner is an unincorporated community in Contra Costa County, California, United States.
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References
[1] https://en.wikipedia.org/wiki/Area_code_925
