18 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Bedford | Hillsborough County | 23,904 |
| Barrington | Strafford County | 9,779 |
| Berlin | Coos County | 9,136 |
| Bow | Merrimack County | 8,423 |
| Belmont | Belknap County | 7,460 |
| Brookline | Hillsborough County | 5,885 |
| Barnstead | Belknap County | 5,070 |
| Brentwood | Rockingham County | 4,919 |
| Boscawen | Merrimack County | 4,269 |
| Bartlett | Carroll County | 3,335 |
| Bristol | Grafton County | 3,272 |
| Bethlehem | Grafton County | 2,578 |
| Bradford | Merrimack County | 1,728 |
| Bennington | Hillsborough County | 1,509 |
| Bridgewater | Grafton County | 1,186 |
| Bath | Grafton County | 1,113 |
| Brookfield | Carroll County | 828 |
| Benton | Grafton County | 376 |