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, California | |
|---|---|
 Castro Valley, c. 1970 | |
 Location of Castro Valley within Alameda County, California | |
  Castro Valley, California Location in the United States | |
| Coordinates: 37°41′39″N 122°05′11″W[1] | |
| Country |  United States |
| State |  California |
| County | Alameda |
| Area | |
| • Total | 17.07 sq mi (44.21 km2) |
| • Land | 16.85 sq mi (43.64 km2) |
| • Water | 0.22 sq mi (0.57 km2) 1.68% |
| Elevation | 161 ft (49 m) |
| Population | |
| • Total | 66,441 |
| • Density | 3,943.55/sq mi (1,522.58/km2) |
| Time zone | UTC-8 (PST) |
| • Summer (DST) | UTC-7 (PDT) |
| ZIP codes | 94546, 94552, 94578, 94541, 94542 |
| Area code(s) | 510, 341 |
| FIPS code | 06-11964 |
| GNIS feature IDs | 1658237, 2407987 |
References
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 12 February 2011. Retrieved 23 April 2011.
- "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved October 30, 2021.
- "Castro Valley". Geographic Names Information System. United States Geological Survey.
- "QuickFacts: Castro Valley CDP, California". United States Census Bureau. Retrieved August 14, 2023.
Municipalities and communities of Alameda County, California, United States | ||
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| Cities |  Alameda County map | |
| CDPs |
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| Unincorporated communities |
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| Annexed communities |
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| Former settlements |
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