| General Information about Area Code 650 | |
|---|---|
| Country | United States |
| State / Province / Territory | California |
| Major City | San Mateo |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 650-866 | San Bruno | San Mateo | Landline |
| 650-579 | San Mateo | San Mateo | Landline |
| 650-837 | San Bruno | San Mateo | Landline |
| 650-821 | San Francisco | San Francisco | Landline |
| 650-338 | Half Moon Bay | San Mateo | Wireless |
| 650-615 | San Bruno | San Mateo | Landline |
| 650-926 | Palo Alto | Santa Clara | Landline |
| 650-542 | Redwood City | San Mateo | Landline |
| 650-223 | Palo Alto | Santa Clara | Landline |
| 650-378 | San Mateo | San Mateo | Landline |
| 650-627 | San Mateo | San Mateo | Landline |
| 650-466 | San Francisco | San Francisco | Landline |
| 650-324 | Palo Alto | Santa Clara | Landline |
| 650-451 | San Francisco | San Francisco | Landline |
| 650-357 | San Mateo | San Mateo | Landline |
| 650-498 | Palo Alto | Santa Clara | Landline |
| 650-219 | San Bruno | San Mateo | Wireless |
| 650-464 | Redwood City | San Mateo | Wireless |
| 650-445 | San Mateo | San Mateo | Wireless |
| 650-822 | San Francisco | San Francisco | Landline |