| City | County | 2026 Pop. ↓ |
|---|---|---|
| Topsham | Sagadahoc County | 10,126 |
| Turner | Androscoggin County | 6,213 |
| Thomaston | Knox County | 2,753 |
| Trenton | Hancock County | 1,665 |
| Tremont | Hancock County | 1,557 |
| Troy | Waldo County | 1,125 |
| Thorndike | Waldo County | 801 |
| Temple | Franklin County | 548 |
| Topsfield | Washington County | 180 |
| Talmadge | Washington County | 73 |
| The Forks | Somerset County | 48 |