San Mateo, CA Area Codes
San Mateo is served by area code 650. It is in California, San Mateo County. About 139,927 people live in its 5 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 650 |
| State / province | California |
| County | San Mateo County |
| Population | 139,927 |
| ZIP codes | 5 |
| Time zone | Pacific |
| Coordinates | 37.5489, -122.3098 |
What area code is San Mateo in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 650 | California | 951,432 | — |
ZIP codes in the code footprint
94401, 94402, 94403, 94404, 94497
Nearby towns and their area codes
Belmont 650Burlingame 650San Carlos 650Millbrae 650Redwood City 650Half Moon Bay 650San Bruno 650South San Francisco 650
How to dial
Dial 650 + 7 digits for a number in San Mateo, or +1 650 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.