| 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 |
|---|---|---|---|
| 650-423 | Redwood City | San Mateo | Landline |
| 650-225 | San Bruno | San Mateo | Landline |
| 650-949 | Los Altos | Santa Clara | Landline |
| 650-813 | Palo Alto | Santa Clara | Landline |
| 650-399 | Redwood City | San Mateo | Landline |
| 650-300 | Palo Alto | Santa Clara | Landline |
| 650-460 | Palo Alto | Santa Clara | Wireless |
| 650-367 | Redwood City | San Mateo | Landline |
| 650-853 | Palo Alto | Santa Clara | Landline |
| 650-417 | San Jose | Santa Clara | Landline |
| 650-992 | Daly City | San Mateo | Landline |
| 650-887 | Los Altos | Santa Clara | Landline |
| 650-237 | Mountain View | Santa Clara | Landline |
| 650-401 | San Mateo | San Mateo | Landline |
| 650-205 | San Bruno | San Mateo | Wireless |
| 650-492 | Mountain View | Santa Clara | Wireless |
| 650-258 | Palo Alto | Santa Clara | Landline |
| 650-851 | Redwood City | San Mateo | Landline |
| 650-284 | Half Moon Bay | San Mateo | Landline |
| 650-240 | San Mateo | San Mateo | Landline |