11 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Topsham | Sagadahoc County | 9,781 |
| Turner | Androscoggin County | 6,041 |
| Thomaston | Knox County | 2,708 |
| Trenton | Hancock County | 1,636 |
| Tremont | Hancock County | 1,530 |
| Troy | Waldo County | 1,148 |
| Thorndike | Waldo County | 817 |
| Temple | Franklin County | 555 |
| Topsfield | Washington County | 182 |
| Talmadge | Washington County | 69 |
| The Forks | Somerset County | 49 |