the resident population of the United States more»
      
    
  | City: | Castro Valley | 
| State: | California | 
| Area Code: | 510 | 
| Latitude: | 37.748270 | 
| Longitude: | -122.116320 | 
| Time Zone: | Eastern GMT -8 | 
| City Alias(es): | Hayward | 
| Population: | 41,703 | 
| 2000 Population: | 41,680 | 
| White Population: | 31,927 | 
| Black Population: | 1,468 | 
| Hispanic Population: | 5,272 | 
| Asian Population: | 4,010 | 
| Hawaiian Population: | 261 | 
| Indian Population: | 170 | 
| Other Population: | 1,664 | 
| Male Population: | 19,948 | 
| Female Population: | 21,732 | 
| Median Age: | 39.60 | 
| Male Median Age: | 38.30 | 
| Female Median Age: | 40.80 | 
| Households: | 16,711 | 
| Average Household Size: | 2.49 | 
| Average House Value: | $282,800 | 
| Average Household Income: | $57,976 | 
| Number of Businesses: | 853 | 
| Number of Employees: | 7,943 | 
| Annual Payroll: | $242,173,000 | 
| Land Area: | 6.849 sq mi | 
| Water Area: | 0.733 sq mi | 
            Hayward, CA (       4.9 miles)
             San Leandro, CA (       5.4 miles)
             San Lorenzo, CA (       5.6 miles)
             San Ramon, CA (       5.9 miles)
             Dublin, CA (       7.5 miles)
             Danville, CA (       8.1 miles)
             Union City, CA (       8.3 miles)
             Moraga, CA (       8.7 miles)
             Diablo, CA (       9.5 miles)