19 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Concord | Merrimack County | 44,862 |
| Claremont | Sullivan County | 13,057 |
| Conway | Carroll County | 10,344 |
| Chester | Rockingham County | 5,352 |
| Charlestown | Sullivan County | 4,897 |
| Candia | Rockingham County | 4,314 |
| Canaan | Grafton County | 3,838 |
| Chesterfield | Cheshire County | 3,688 |
| Campton | Grafton County | 3,454 |
| Chichester | Merrimack County | 2,893 |
| Canterbury | Merrimack County | 2,493 |
| Colebrook | Coos County | 2,096 |
| Cornish | Sullivan County | 1,644 |
| Center Harbor | Belknap County | 1,051 |
| Croydon | Sullivan County | 874 |
| Carroll | Coos County | 855 |
| Columbia | Coos County | 669 |
| Chatham | Carroll County | 351 |
| Clarksville | Coos County | 281 |