Castro Valley, California

Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. As of the 2020 census, it is the fourth most populous unincorporated area in California. The population was 66,441 at the 2020 census.[4]

Castro Valley about 1970.jpg
Location of Castro Valley within Alameda County, California
Location of Castro Valley within Alameda County, California
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Coordinates: 37°41′39″N 122°05′11″W / 37.69417°N 122.08639°W / 37.69417; -122.08639Coordinates: 37°41′39″N 122°05′11″W / 37.69417°N 122.08639°W / 37.69417; -122.08639[1]
Country United States
State California
CountyAlameda
Area
 • Total17.07 sq mi (44.21 km2)
 • Land16.85 sq mi (43.64 km2)
 • Water0.22 sq mi (0.57 km2)  1.68%
Elevation161 ft (49 m)
Population
 • Total66,441
 • Density3,943.55/sq mi (1,522.58/km2)
Time zoneUTC-8 (PST)
 • Summer (DST)UTC-7 (PDT)
ZIP codes
94546, 94552, 94578, 94541, 94542
FIPS code06-11964
GNIS feature IDs1658237, 2407987

Castro Valley, California Media

References