11 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Topsham | Sagadahoc County | 9,976 |
| Turner | Androscoggin County | 6,191 |
| Thomaston | Knox County | 2,725 |
| Trenton | Hancock County | 1,643 |
| Tremont | Hancock County | 1,524 |
| Troy | Waldo County | 1,146 |
| Thorndike | Waldo County | 813 |
| Temple | Franklin County | 563 |
| Topsfield | Washington County | 178 |
| Talmadge | Washington County | 70 |
| The Forks | Somerset County | 48 |