| 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 |
|---|---|---|---|
| 650-749 | La Honda | San Mateo | Landline |
| 650-930 | Sunnyvale | Santa Clara | Landline |
| 650-704 | Palo Alto | Santa Clara | Wireless |
| 650-921 | San Mateo | San Mateo | Wireless |
| 650-903 | Mountain View | Santa Clara | Landline |
| 650-320 | Palo Alto | Santa Clara | Landline |
| 650-441 | Santa Clara | Santa Clara | - |
| 650-969 | Mountain View | Santa Clara | Landline |
| 650-924 | Palo Alto | Santa Clara | Wireless |
| 650-858 | Palo Alto | Santa Clara | Landline |
| 650-598 | San Carlos | San Mateo | Landline |
| 650-274 | Brisbane | San Mateo | Wireless |
| 650-463 | Palo Alto | Santa Clara | Landline |
| 650-933 | Mountain View | Santa Clara | Landline |
| 650-842 | Palo Alto | Santa Clara | Landline |
| 650-326 | Palo Alto | Santa Clara | Landline |
| 650-624 | San Bruno | San Mateo | Landline |
| 650-255 | San Bruno | San Mateo | Wireless |
| 650-392 | San Francisco | San Francisco | Landline |
| 650-239 | Millbrae | San Mateo | Landline |