About Castro Valley

Castro Valley is the 5th most populated unincorporated community in California with approximately 62,000 residents. Located 26 miles south east of San Francisco this community is primarily a bedroom community.

Served by Interstate 580 and the Bay Area Transit Agency it has a Mediterranean climate and is closest to the cities of San Ramon (Contra Costa County) and Dublin/Pleasanton (Alameda County).

Area Listings

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Updated: 27th September, 2021 4:19 AM (UTC).