Explore San Ramon local geography, civic resources and voter guides, with dated official population and registration facts for Contra Costa County.
At a glance: San Ramon is an incorporated city in Contra Costa County. Population: 84,220 (California Department of Finance estimate as of January 1, 2026). Registered voters: 52,338 (California Secretary of State, as of September 4, 2026).
San Ramon stretches through the southern San Ramon Valley, with the Interstate 680 corridor to the west of Dougherty Valley's newer neighborhoods. Business campuses and civic facilities share a landscape bordered by grassy ridges. Central Park on Alcosta Boulevard combines athletic fields, courts, playgrounds, picnic space, and trail access. The San Ramon Community Center and City Hall provide nearby settings for public programs and municipal gatherings. San Ramon incorporated on July 1, 1983. Unlike many neighboring inland cities, it is a charter city; its municipal organization uses council-manager government.
The city lists it at 12501 Alcosta Boulevard.
Yes. The official park page links to picnic reservation information.
Its official incorporation date is July 1, 1983; the city marked its 40th anniversary in 2023.
52,338 (California Secretary of State, as of September 4, 2026).
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