Castro Valley, California

Coordinates: 37°41′39″N 122°05′11″W / 37.69417°N 122.08639°W / 37.69417; -122.08639
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Castro Valley, California
Castro Valley, c. 1970
Castro Valley, c. 1970
Location of Castro Valley within Alameda County, California
Location of Castro Valley within Alameda County, California
Castro Valley, California is located in the United States
Castro Valley, California
Castro Valley, California
Location in the United States
Coordinates: 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
Area code(s)510, 341
FIPS code06-11964
GNIS feature IDs1658237, 2407987

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]

References[change | change source]

  1. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 12 February 2011. Retrieved 23 April 2011.
  2. "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved October 30, 2021.
  3. "Castro Valley". Geographic Names Information System. United States Geological Survey.
  4. 4.0 4.1 "QuickFacts: Castro Valley CDP, California". United States Census Bureau. Retrieved August 14, 2023.