| 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 |
|---|---|---|---|
| 831-755 | Salinas | Monterey | Landline |
| 831-221 | San Ardo | Monterey | Landline |
| 831-537 | Hollister | San Benito | Landline |
| 831-425 | Santa Cruz | Santa Cruz | Landline |
| 831-821 | Hollister | San Benito | Wireless |
| 831-345 | Santa Cruz | Santa Cruz | Wireless |
| 831-609 | Ben Lomond | Santa Cruz | Landline |
| 831-776 | Salinas | Monterey | Wireless |
| 831-905 | Salinas | Monterey | Wireless |
| 831-759 | Salinas | Monterey | Landline |
| 831-778 | San Ardo | Monterey | Landline |
| 831-713 | Santa Cruz | Santa Cruz | Landline |
| 831-800 | Salinas | Monterey | Landline |
| 831-449 | Salinas | Monterey | Landline |
| 831-210 | Monterey | Monterey | Wireless |
| 831-688 | Aptos | Santa Cruz | Landline |
| 831-457 | Santa Cruz | Santa Cruz | Landline |
| 831-532 | Ben Lomond | Santa Cruz | Landline |
| 831-275 | Monterey | Monterey | Landline |
| 831-737 | Salinas | Monterey | Landline |