| General Information about Area Code 925 | |
|---|---|
| Country | United States |
| State / Province / Territory | California |
| Major City | Walnut Creek |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 925-665 | Pittsburg | Contra Costa | Landline |
| 925-312 | Antioch | Contra Costa | Wireless |
| 925-977 | Walnut Creek | Contra Costa | Wireless |
| 925-790 | Danville | Contra Costa | Landline |
| 925-969 | Concord | Contra Costa | Landline |
| 925-315 | Livermore | Alameda | Landline |
| 925-337 | Livermore | Alameda | Wireless |
| 925-457 | Walnut Creek | Contra Costa | Wireless |
| 925-672 | Clayton | Contra Costa | Landline |
| 925-459 | Concord | Contra Costa | Landline |
| 925-343 | Pleasanton | Alameda | Wireless |
| 925-875 | San Ramon | Contra Costa | Landline |
| 925-709 | Pittsburg | Contra Costa | Landline |
| 925-585 | Concord | Contra Costa | Wireless |
| 925-839 | Martinez | Contra Costa | Landline |
| 925-825 | Concord | Contra Costa | Landline |
| 925-348 | Concord | Contra Costa | Wireless |
| 925-597 | Pittsburg | Contra Costa | Wireless |
| 925-526 | Pittsburg | Contra Costa | Landline |
| 925-377 | Moraga | Contra Costa | Landline |