11 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Topsham | Sagadahoc County | 9,898 |
| Turner | Androscoggin County | 6,102 |
| Thomaston | Knox County | 2,738 |
| Trenton | Hancock County | 1,643 |
| Tremont | Hancock County | 1,534 |
| Troy | Waldo County | 1,126 |
| Thorndike | Waldo County | 808 |
| Temple | Franklin County | 557 |
| Topsfield | Washington County | 179 |
| Talmadge | Washington County | 70 |
| The Forks | Somerset County | 48 |