Watertown, MA Area Codes
Watertown is served by area codes 617 and 857. It is in Massachusetts, Middlesex County. About 35,620 people live in its 3 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 617, 857 |
| State / province | Massachusetts |
| County | Middlesex County |
| Population | 35,620 |
| ZIP codes | 3 |
| Time zone | Eastern |
| Coordinates | 42.3704, -71.1812 |
What area code is Watertown in?
ZIP codes in the code footprint
Nearby towns and their area codes
Newton 617, 857Belmont 617, 857Newtonville 617, 857Brighton 617, 857Allston 617, 857West Newton 339, 617, 781Waltham 339, 617, 781Arlington 339, 781
How to dial
Dial 617 + 7 digits for a number in Watertown, or +1 617 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.