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> California > Zip Code 94552
| Zip Code : | 94552 |
| City : | Castro Valley, Fairview, Hayward city, Sunol, Union city |
| County : | Alameda County |
| State : | California (CA) |
| Land Area : | 44.90 sq mi |
| Water Area : | 0.02 sq mi |
| Latitude : | 37.7227204 |
| Longitude : | -122.0215524 |
| Population (2010): | 14,454 |
| Population Estimate (2012) : | 14,199 |
| Population Density : | 321.93/sq mi |
| Housing Units (2012) : | 5,067 |
| Median Household Income (2012) : | $136,303 (California : $61,400, USA : $53,046) |
| Median Family Income (2012) : | $144,151 (California : $69,883, USA : $64,585) |
| Median House Price (2012) : | $672,300 (California : $383,900, USA : $181,400) |