California, United States · North America
61,388
Population
North America
Continent
Los_Angeles
Timezone
US
Country Code
Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2020 census, it was the fourth most populous unincorporated area in California. The population was 66,441 at the 2020 census. Castro Valley is named after Guillermo Castro, a noted 19th-century Mexican Californio ranchero who owned the land where the community is located.
Coordinates
37.6941°, -122.0863°
Elevation
50m
Region/State
California
District
Alameda County
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Country
United States
Region
California
Timezone
America/Los_Angeles
Population
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61,388
