| General Information about Area Code 510 | |
|---|---|
| Country | United States |
| State / Province / Territory | California |
| Major City | Oakland |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 510-246 | Hayward | Alameda | Wireless |
| 510-348 | Oakland | Alameda | Wireless |
| 510-327 | Rodeo | Contra Costa | Landline |
| 510-274 | Hayward | Alameda | Landline |
| 510-487 | Union City | Alameda | Landline |
| 510-264 | Hayward | Alameda | Landline |
| 510-864 | Alameda | Alameda | Landline |
| 510-810 | Berkeley | Alameda | Wireless |
| 510-794 | Fremont | Alameda | Landline |
| 510-406 | Oakland | Alameda | Wireless |
| 510-533 | Oakland | Alameda | Landline |
| 510-805 | Oakland | Alameda | Wireless |
| 510-654 | Emeryville | Alameda | Landline |
| 510-625 | Oakland | Alameda | Landline |
| 510-349 | Richmond | Contra Costa | Wireless |
| 510-670 | Hayward | Alameda | Landline |
| 510-362 | Hayward | Alameda | Wireless |
| 510-223 | El Sobrante | Contra Costa | Landline |
| 510-787 | Crockett | Contra Costa | Landline |
| 510-750 | Hayward | Alameda | Wireless |