| District of California area codes: 831 | |
|---|---|
| Country | United States |
| State/Province | California |
| Major City | Salinas |
| Time Zone | Pacific |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 831-524 | San Benito | Hollister, CA | New Cingular Wireless PCS |
| 831-525 | Monterey | King City, CA | Pac - West Telecomm |
| 831-531 | Santa Cruz | Aptos, CA | Xo California |
| 831-532 | Santa Cruz | Ben Lomond, CA | Xo California |
| 831-533 | Santa Cruz | Boulder Creek, CA | Xo California |
| 831-534 | Santa Cruz | Felton, CA | Xo California |
| 831-535 | Santa Cruz | Santa Cruz, CA | Xo California |
| 831-536 | Santa Cruz | Watsonville, CA | Xo California |
| 831-537 | San Benito | Hollister, CA | Pac - West Telecomm |
| 831-539 | Santa Cruz | Watsonville, CA | Sprint Spectrum L.p. |
| 831-540 | Monterey | Salinas, CA | O1 Communications |
| 831-560 | Santa Cruz | Aptos, CA | American Messaging (am) |
| 831-566 | Santa Cruz | Santa Cruz, CA | Cellco Partnership DBA Verizon Wireless |
| 831-572 | Santa Cruz | Aptos, CA | The Telephone Connection Local Services |
| 831-574 | Santa Cruz | Santa Cruz, CA | Pac - West Telecomm |
| 831-576 | Santa Cruz | Santa Cruz, CA | Pac - West Telecomm |
| 831-578 | Monterey | Salinas, CA | New Cingular Wireless PCS |
| 831-580 | Monterey | Gonzales, CA | O1 Communications |
| 831-582 | Monterey | Marina, CA | Pacific Bell |
| 831-583 | Monterey | Monterey, CA | Pacific Bell |
There are 334 prefixes, In the code area, the major cities are Hollister, CA;Marina, CA;Monterey, CA;Salinas, CA;. The major city is Salinas.