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. San Ramon's population was as 84,605 at the 2020 census,[1] making it the 4th largest city in Contra Costa County, after Concord, Richmond, and Antioch.
It shares borders with Danville to the north and Dublin to the south.
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| Bodies of water | |
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| Counties | |
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| Major cities | |
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Cities and towns
100k–250k | |
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Cities and towns
50k–99k | |
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Cities and towns
25k-50k | |
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Cities and towns
10k–25k | |
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| Sub-regions | |
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| Cities and towns | | |
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| CDPs |
- Acalanes Ridge
- Alamo
- Alhambra Valley
- Bay Point
- Bayview
- Bethel Island
- Blackhawk
- Byron
- Camino Tassajara
- Castle Hill
- Clyde
- Contra Costa Centre
- Crockett
- Diablo
- Discovery Bay
- East Richmond Heights
- El Sobrante
- Kensington
- Knightsen
- Montalvin Manor
- Mountain View
- Norris Canyon
- North Gate
- North Richmond
- Pacheco
- Port Costa
- Reliez Valley
- Rodeo
- Rollingwood
- San Miguel
- Saranap
- Shell Ridge
- Tara Hills
- Vine Hill
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| Former CDPs |
- Bayview-Montalvin
- Blackhawk-Camino Tassajara
- Waldon
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Unincorporated
communities |
- Canyon
- Cornwall
- Nichols
- Oleum
- Rheem
- Selby
- Stege
- Tassajara
- Tormey
- Valona
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| Ghost towns |
- Eckley
- Giant (Nitro)
- Judsonville
- Nortonville
- Point of Timber
- Port Chicago
- Somersville
- Stewartville
- West Hartley
- Winehaven
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