6 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Tilton town | Belknap County | 4,216 |
| Tamworth town | Carroll County | 2,932 |
| Thornton town | Grafton County | 2,908 |
| Tuftonboro town | Carroll County | 2,700 |
| Troy town | Cheshire County | 2,202 |
| Temple town | Hillsborough County | 1,401 |