| City | County | 2026 Pop. ↓ |
|---|---|---|
| Amherst | Hillsborough County | 12,050 |
| Atkinson | Rockingham County | 7,451 |
| Auburn | Rockingham County | 6,425 |
| Alton | Belknap County | 6,030 |
| Allenstown | Merrimack County | 4,900 |
| Antrim | Hillsborough County | 2,791 |
| Andover | Merrimack County | 2,468 |
| Ashland | Grafton County | 1,940 |
| Alstead | Cheshire County | 1,934 |
| Alexandria | Grafton County | 1,728 |
| Acworth | Sullivan County | 905 |
| Albany | Carroll County | 778 |