Castro Valley, California | |
---|---|
Coordinates: 37°41′39″N 122°05′11″W / 37.69417°N 122.08639°W[1] | |
Country | United States |
State | California |
County | Alameda |
Named for | Don Guillermo Castro |
Government | |
• State Senate | Nancy Skinner (D)[2] |
• State Assembly | Liz Ortega (D)[3] |
• U. S. Congress | Eric Swalwell (D)[4] |
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 (2020) | |
• 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, 94541, |
Area code(s) | 510, 341 |
FIPS code | 06-11964 |
GNIS feature IDs | 1658237, 2407987 |
Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2010 census, it was the fifth most populous unincorporated area in California.[7] The population was 66,441 at the 2020 census.[8]
Castro Valley is named after Guillermo Castro, a noted 19th-century Californio ranchero who owned the land where the community is located.