18 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Bedford | Hillsborough County | 23,880 |
| Barrington | Strafford County | 9,704 |
| Berlin | Coos County | 9,192 |
| Bow | Merrimack County | 8,410 |
| Belmont | Belknap County | 7,444 |
| Brookline | Hillsborough County | 5,850 |
| Barnstead | Belknap County | 5,053 |
| Brentwood | Rockingham County | 4,853 |
| Boscawen | Merrimack County | 4,211 |
| Bartlett | Carroll County | 3,329 |
| Bristol | Grafton County | 3,274 |
| Bethlehem | Grafton County | 2,566 |
| Bradford | Merrimack County | 1,725 |
| Bennington | Hillsborough County | 1,508 |
| Bridgewater | Grafton County | 1,185 |
| Bath | Grafton County | 1,111 |
| Brookfield | Carroll County | 826 |
| Benton | Grafton County | 368 |