| General Information about Area Code 831 | |
|---|---|
| Country | United States |
| State / Province / Territory | California |
| Major City | Santa Cruz |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 831-244 | Big Sur | Monterey | Landline |
| 831-676 | Salinas | Monterey | Landline |
| 831-417 | Salinas | Monterey | Landline |
| 831-256 | Salinas | Monterey | Wireless |
| 831-763 | Watsonville | Santa Cruz | Landline |
| 831-420 | Santa Cruz | Santa Cruz | Landline |
| 831-824 | Santa Cruz | Santa Cruz | Landline |
| 831-610 | Boulder Creek | Santa Cruz | Landline |
| 831-287 | Salinas | Monterey | Landline |
| 831-718 | Monterey | Monterey | Landline |
| 831-301 | Salinas | Monterey | Landline |
| 831-359 | Santa Cruz | Santa Cruz | Landline |
| 831-406 | Watsonville | Santa Cruz | Wireless |
| 831-307 | Salinas | Monterey | Landline |
| 831-641 | Monterey | Monterey | Landline |
| 831-228 | - | - | - |
| 831-851 | Watsonville | Santa Cruz | Landline |
| 831-901 | Monterey | Monterey | Wireless |
| 831-854 | Santa Cruz | Santa Cruz | Landline |
| 831-664 | Hollister | San Benito | Landline |