19 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Nashua | Hillsborough County | 93,297 |
| Newmarket | Rockingham County | 9,616 |
| Newport | Sullivan County | 6,434 |
| New Boston | Hillsborough County | 6,287 |
| Nottingham | Rockingham County | 5,617 |
| New Ipswich | Hillsborough County | 5,475 |
| Northfield | Merrimack County | 5,162 |
| Newton | Rockingham County | 4,871 |
| Northwood | Rockingham County | 4,750 |
| North Hampton | Rockingham County | 4,539 |
| New London | Merrimack County | 4,480 |
| New Durham | Strafford County | 2,870 |
| New Hampton | Belknap County | 2,419 |
| Newbury | Merrimack County | 2,348 |
| Northumberland | Coos County | 2,085 |
| Newfields | Rockingham County | 1,793 |
| New Castle | Rockingham County | 1,009 |
| Newington | Strafford County | 859 |
| Nelson | Cheshire County | 685 |