Where Is Area Code 510?
Area code 510 is found in the US state of California. Primarily servicing the city of Oakland (population: 392681), area code 510 covers 2 counties of California.
Located in the Pacific time zone, area code 510 is on the same time as Los Angeles, CA.
Area code 510 was brought into effect on September 2, 1991. 510 was split from the parent 415 area code.
Counties in Area Code 510
- Alameda,
- Contra Costa.
Most Populous Cities in Area Code 510
| City | County | City Population | Time Zone |
|---|---|---|---|
| Oakland | Alameda | 392,681 | PST |
| Fremont | Alameda | 220,411 | PST |
| Hayward | Alameda | 182,295 | PST |
| Berkeley | Alameda | 122,077 | PST |
| San Leandro | Alameda | 107,768 | PST |
| Richmond | Contra Costa | 83,978 | PST |
| Alameda | Alameda | 75,984 | PST |
| Union City | Alameda | 71,561 | PST |
| San Pablo | Contra Costa | 61,605 | PST |
| Castro Valley | Alameda | 58,330 | PST |
| Newark | Alameda | 43,825 | PST |
| Emeryville | Alameda | 28,843 | PST |
| San Lorenzo | Alameda | 27,951 | PST |
| El Sobrante | Contra Costa | 25,629 | PST |
| Hercules | Contra Costa | 24,794 | PST |
| El Cerrito | Contra Costa | 24,572 | PST |
| Albany | Alameda | 20,192 | PST |
| Pinole | Contra Costa | 18,819 | PST |
| Rodeo | Contra Costa | 8,937 | PST |
| Crockett | Contra Costa | 3,218 | PST |
Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.
View all United States Area Codes.
This page was last updated on July 3, 2015.