| 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 |
|---|---|---|---|
| 925-579 | Livermore | Alameda | Landline |
| 925-676 | Concord | Contra Costa | Landline |
| 925-465 | Walnut Creek | Contra Costa | Landline |
| 925-335 | Martinez | Contra Costa | Landline |
| 925-332 | Concord | Contra Costa | Landline |
| 925-231 | Martinez | Contra Costa | Landline |
| 925-895 | San Ramon | Contra Costa | Wireless |
| 925-294 | Livermore | Alameda | Landline |
| 925-838 | Danville | Contra Costa | Landline |
| 925-965 | Pleasanton | Alameda | Landline |
| 925-340 | Walnut Creek | Contra Costa | Wireless |
| 925-584 | Antioch | Contra Costa | Wireless |
| 925-244 | Danville | Contra Costa | Landline |
| 925-347 | Livermore | Alameda | Wireless |
| 925-990 | Sunol | Alameda | Wireless |
| 925-290 | Livermore | Alameda | Landline |
| 925-791 | Concord | Contra Costa | Landline |
| 925-831 | Danville | Contra Costa | Landline |
| 925-471 | Concord | Contra Costa | Landline |
| 925-250 | Concord | Contra Costa | Wireless |