| City | County | 2026 Pop. ↓ |
|---|---|---|
| Bedford | Hillsborough County | 24,080 |
| Barrington | Strafford County | 9,677 |
| Berlin | Coos County | 9,492 |
| Bow | Merrimack County | 8,453 |
| Belmont | Belknap County | 7,402 |
| Brookline | Hillsborough County | 5,900 |
| Brentwood | Rockingham County | 5,071 |
| Barnstead | Belknap County | 5,047 |
| Boscawen | Merrimack County | 4,295 |
| Bartlett | Carroll County | 3,346 |
| Bristol | Grafton County | 3,240 |
| Bethlehem | Grafton County | 2,594 |
| Bradford | Merrimack County | 1,728 |
| Bennington | Hillsborough County | 1,529 |
| Bridgewater | Grafton County | 1,186 |
| Bath | Grafton County | 1,119 |
| Brookfield | Carroll County | 828 |
| Benton | Grafton County | 361 |