| 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 |
|---|---|---|---|
| 831-304 | Greenfield | Monterey | Landline |
| 831-578 | Salinas | Monterey | Wireless |
| 831-429 | Santa Cruz | Santa Cruz | Landline |
| 831-247 | Santa Cruz | Santa Cruz | Wireless |
| 831-634 | Hollister | San Benito | Landline |
| 831-469 | Santa Cruz | Santa Cruz | Landline |
| 831-775 | Salinas | Monterey | Landline |
| 831-643 | Monterey | Monterey | Landline |
| 831-784 | Salinas | Monterey | Landline |
| 831-394 | Monterey | Monterey | Landline |
| 831-850 | Felton | Santa Cruz | Landline |
| 831-970 | Salinas | Monterey | Wireless |
| 831-574 | Santa Cruz | Santa Cruz | Landline |
| 831-274 | Watsonville | Santa Cruz | Landline |
| 831-384 | Marina | Monterey | Landline |
| 831-200 | Monterey | Monterey | Landline |
| 831-219 | Aptos | Santa Cruz | Landline |
| 831-521 | Monterey | Monterey | Wireless |
| 831-309 | Carmel | Monterey | Landline |
| 831-628 | Tres Pinos | San Benito | Landline |