Mill Valley, CA Area Codes
Mill Valley is served by area codes 415 and 628. It is in California, Marin County. About 32,706 people live in its 2 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 415, 628 |
| State / province | California |
| County | Marin County |
| Population | 32,706 |
| ZIP codes | 2 |
| Time zone | Pacific |
| Coordinates | 37.9154, -122.5726 |
What area code is Mill Valley in?
ZIP codes in the code footprint
Nearby towns and their area codes
Greenbrae 415, 628Corte Madera 415, 628San Anselmo 415, 628Sausalito 415, 628Belvedere Tiburon 415, 628San Rafael 415, 628Richmond 341, 510San Francisco 415, 628
How to dial
Dial 415 + 7 digits for a number in Mill Valley, or +1 415 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.