| City | County | 2026 Pop. ↓ |
|---|---|---|
| Hudson | Hillsborough County | 26,215 |
| Hampton | Rockingham County | 16,343 |
| Hooksett | Merrimack County | 15,372 |
| Hanover | Grafton County | 12,033 |
| Hampstead | Rockingham County | 9,105 |
| Hollis | Hillsborough County | 8,884 |
| Henniker | Merrimack County | 6,284 |
| Hillsborough | Hillsborough County | 6,179 |
| Hopkinton | Merrimack County | 6,122 |
| Haverhill | Grafton County | 4,693 |
| Hinsdale | Cheshire County | 4,034 |
| Hampton Falls | Rockingham County | 2,370 |
| Holderness | Grafton County | 2,023 |
| Hancock | Hillsborough County | 1,773 |
| Hill | Merrimack County | 1,052 |
| Harrisville | Cheshire County | 998 |
| Hebron | Grafton County | 662 |
| Hart's Location | Carroll County | 71 |