| 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 |
|---|---|---|---|
| 831-920 | Monterey | Monterey | Landline |
| 831-794 | Salinas | Monterey | Wireless |
| 831-855 | Salinas | Monterey | Landline |
| 831-656 | Monterey | Monterey | Landline |
| 831-622 | Carmel | Monterey | Landline |
| 831-439 | Santa Cruz | Santa Cruz | Landline |
| 831-756 | Salinas | Monterey | Landline |
| 831-227 | Santa Cruz | Santa Cruz | Landline |
| 831-431 | Santa Cruz | Santa Cruz | Landline |
| 831-423 | Santa Cruz | Santa Cruz | Landline |
| 831-644 | Monterey | Monterey | Landline |
| 831-297 | Hollister | San Benito | Wireless |
| 831-566 | Santa Cruz | Santa Cruz | Wireless |
| 831-288 | Watsonville | Santa Cruz | Landline |
| 831-332 | Santa Cruz | Santa Cruz | Wireless |
| 831-588 | Santa Cruz | Santa Cruz | Wireless |
| 831-438 | Santa Cruz | Santa Cruz | Landline |
| 831-884 | Marina | Monterey | Landline |
| 831-607 | Aptos | Santa Cruz | Landline |
| 831-687 | Aptos | Santa Cruz | Landline |