18 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Hudson | Hillsborough County | 26,151 |
| Hampton | Rockingham County | 16,486 |
| Hooksett | Merrimack County | 15,613 |
| Hanover | Grafton County | 11,971 |
| Hampstead | Rockingham County | 9,214 |
| Hollis | Hillsborough County | 8,790 |
| Henniker | Merrimack County | 6,307 |
| Hillsborough | Hillsborough County | 6,291 |
| Hopkinton | Merrimack County | 6,266 |
| Haverhill | Grafton County | 4,666 |
| Hinsdale | Cheshire County | 4,067 |
| Hampton Falls | Rockingham County | 2,402 |
| Holderness | Grafton County | 2,034 |
| Hancock | Hillsborough County | 1,755 |
| Hill | Merrimack County | 1,066 |
| Harrisville | Cheshire County | 1,009 |
| Hebron | Grafton County | 649 |
| Hart's Location | Carroll County | 66 |