Merrimack, NH Area Codes
Merrimack is served by area code 603. It is in New Hampshire, Hillsborough County. About 28,176 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 603 |
| State / province | New Hampshire |
| County | Hillsborough County |
| Population | 28,176 |
| ZIP codes | 1 |
| Time zone | Eastern |
| Coordinates | 42.8520, -71.5199 |
What area code is Merrimack 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 Merrimack, or +1 603 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.