| 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 |
|---|---|---|---|
| 650-343 | San Mateo | San Mateo | Landline |
| 650-861 | Mountain View | Santa Clara | Wireless |
| 650-517 | Redwood City | San Mateo | Landline |
| 650-727 | San Mateo | San Mateo | Landline |
| 650-266 | San Bruno | San Mateo | Landline |
| 650-592 | San Carlos | San Mateo | Landline |
| 650-406 | Mountain View | Santa Clara | Wireless |
| 650-434 | Redwood City | San Mateo | Landline |
| 650-732 | Millbrae | San Mateo | Landline |
| 650-364 | Redwood City | San Mateo | Landline |
| 650-315 | Brisbane | San Mateo | Wireless |
| 650-838 | Palo Alto | Santa Clara | Landline |
| 650-631 | San Carlos | San Mateo | Landline |
| 650-222 | San Mateo | San Mateo | Wireless |
| 650-730 | Redwood City | San Mateo | Landline |
| 650-355 | Pacifica | San Mateo | Landline |
| 650-823 | Los Altos | Santa Clara | Wireless |
| 650-385 | Redwood City | San Mateo | Landline |
| 650-207 | Redwood City | San Mateo | Wireless |
| 650-701 | Redwood City | San Mateo | Landline |