New Hampshire Area Codes
The state of New Hampshire, USA is currently served by this single area code:
Larger New Hampshire cities and their area codes
| City |
County | Area Codes |
| Concord | Merrimack | 603 |
| Dover | Strafford | 603 |
| Manchester | Hillsborough | 603 |
| Nashua | Hillsborough | 603 |
| Rochester | Strafford | 603 |
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