19 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Concord | Merrimack County | 44,768 |
| Claremont | Sullivan County | 13,081 |
| Conway | Carroll County | 10,320 |
| Chester | Rockingham County | 5,337 |
| Charlestown | Sullivan County | 4,908 |
| Candia | Rockingham County | 4,266 |
| Canaan | Grafton County | 3,829 |
| Chesterfield | Cheshire County | 3,674 |
| Campton | Grafton County | 3,444 |
| Chichester | Merrimack County | 2,852 |
| Canterbury | Merrimack County | 2,480 |
| Colebrook | Coos County | 2,098 |
| Cornish | Sullivan County | 1,646 |
| Center Harbor | Belknap County | 1,049 |
| Croydon | Sullivan County | 865 |
| Carroll | Coos County | 847 |
| Columbia | Coos County | 668 |
| Chatham | Carroll County | 351 |
| Clarksville | Coos County | 283 |