19 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Concord | Merrimack County | 44,909 |
| Claremont | Sullivan County | 13,041 |
| Conway | Carroll County | 10,391 |
| Chester | Rockingham County | 5,294 |
| Charlestown | Sullivan County | 5,009 |
| Candia | Rockingham County | 4,229 |
| Canaan | Grafton County | 3,773 |
| Chesterfield | Cheshire County | 3,685 |
| Campton | Grafton County | 3,419 |
| Chichester | Merrimack County | 2,792 |
| Canterbury | Merrimack County | 2,471 |
| Colebrook | Coos County | 2,108 |
| Cornish | Sullivan County | 1,643 |
| Center Harbor | Belknap County | 1,060 |
| Croydon | Sullivan County | 862 |
| Carroll | Coos County | 830 |
| Columbia | Coos County | 676 |
| Chatham | Carroll County | 354 |
| Clarksville | Coos County | 280 |