| 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 |
|---|---|---|---|
| 650-479 | Half Moon Bay | San Mateo | Landline |
| 650-795 | La Honda | San Mateo | Landline |
| 650-242 | San Mateo | San Mateo | Landline |
| 650-940 | Mountain View | Santa Clara | Landline |
| 650-800 | Palo Alto | Santa Clara | Landline |
| 650-396 | Mountain View | Santa Clara | Landline |
| 650-623 | Mountain View | Santa Clara | Landline |
| 650-259 | Millbrae | San Mateo | Landline |
| 650-532 | San Mateo | San Mateo | Landline |
| 650-246 | San Bruno | San Mateo | Landline |
| 650-802 | San Carlos | San Mateo | Landline |
| 650-346 | Brisbane | San Mateo | Wireless |
| 650-570 | San Mateo | San Mateo | Landline |
| 650-731 | San Francisco | San Francisco | Landline |
| 650-737 | San Bruno | San Mateo | Landline |
| 650-835 | San Bruno | San Mateo | Landline |
| 650-673 | La Honda | San Mateo | Landline |
| 650-421 | Redwood City | San Mateo | Landline |
| 650-742 | San Bruno | San Mateo | Landline |
| 650-528 | Mountain View | Santa Clara | Landline |