| 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 |
|---|---|---|---|
| 510-881 | Castro Valley | Alameda | Landline |
| 510-537 | Castro Valley | Alameda | Landline |
| 510-567 | Oakland | Alameda | Landline |
| 510-336 | Oakland | Alameda | Landline |
| 510-986 | Oakland | Alameda | Landline |
| 510-808 | Oakland | Alameda | Landline |
| 510-253 | Richmond | Contra Costa | Landline |
| 510-624 | Fremont | Alameda | Landline |
| 510-477 | Union City | Alameda | Landline |
| 510-727 | Castro Valley | Alameda | Landline |
| 510-695 | Hayward | Alameda | Wireless |
| 510-597 | Emeryville | Alameda | Landline |
| 510-578 | Fremont | Alameda | Landline |
| 510-628 | Oakland | Alameda | Landline |
| 510-668 | Fremont | Alameda | Landline |
| 510-334 | Richmond | Contra Costa | Wireless |
| 510-995 | Oakland | Alameda | Landline |
| 510-447 | Richmond | Contra Costa | Wireless |
| 510-693 | Oakland | Alameda | Wireless |
| 510-842 | San Francisco | San Francisco | Landline |