Portsmouth, NH Area Codes
Portsmouth is served by area code 603. It is in New Hampshire, Rockingham County. About 23,484 people live in its 4 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 603 |
| State / province | New Hampshire |
| County | Rockingham County |
| Population | 23,484 |
| ZIP codes | 4 |
| Time zone | Eastern |
| Coordinates | 43.0726, -70.7733 |
What area code is Portsmouth in?
| Area code | Main state | Population covered | Overlap |
|---|---|---|---|
| 603 | New Hampshire | 1,394,951 | — |
ZIP codes in the code footprint
Nearby towns and their area codes
How to dial
Dial 603 + 7 digits for a number in Portsmouth, or +1 603 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.