19 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Nashua | Hillsborough County | 92,574 |
| Newmarket | Rockingham County | 9,572 |
| Newport | Sullivan County | 6,426 |
| New Boston | Hillsborough County | 6,253 |
| Nottingham | Rockingham County | 5,543 |
| New Ipswich | Hillsborough County | 5,440 |
| Northfield | Merrimack County | 5,114 |
| Newton | Rockingham County | 4,857 |
| Northwood | Rockingham County | 4,726 |
| North Hampton | Rockingham County | 4,539 |
| New London | Merrimack County | 4,470 |
| New Durham | Strafford County | 2,842 |
| New Hampton | Belknap County | 2,422 |
| Newbury | Merrimack County | 2,320 |
| Northumberland | Coos County | 2,096 |
| Newfields | Rockingham County | 1,787 |
| New Castle | Rockingham County | 1,005 |
| Newington | Strafford County | 848 |
| Nelson | Cheshire County | 676 |