18 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Bedford town | Hillsborough County | 23,660 |
| Barrington town | Strafford County | 9,654 |
| Berlin city | Coos County | 9,317 |
| Bow town | Merrimack County | 8,401 |
| Belmont town | Belknap County | 7,442 |
| Brookline town | Hillsborough County | 5,813 |
| Barnstead town | Belknap County | 5,074 |
| Brentwood town | Rockingham County | 4,864 |
| Boscawen town | Merrimack County | 4,113 |
| Bartlett town | Carroll County | 3,361 |
| Bristol town | Grafton County | 3,240 |
| Bethlehem town | Grafton County | 2,528 |
| Bradford town | Merrimack County | 1,739 |
| Bennington town | Hillsborough County | 1,502 |
| Bridgewater town | Grafton County | 1,175 |
| Bath town | Grafton County | 1,105 |
| Brookfield town | Carroll County | 858 |
| Benton town | Grafton County | 359 |