Zip Code | City | Population |
|---|---|---|
| 04915 | Belfast | 9,078 |
| 04496 | Winterport | 3,837 |
| 04849 | Lincolnville | 3,808 |
| 04974 | Searsport | 2,649 |
| 04981 | Stockton Springs | 2,479 |
| 04986 | Thorndike | 2,382 |
| 04988 | Unity | 1,988 |
| 04941 | Freedom | 1,736 |
| 04952 | Morrill | 1,730 |
| 04921 | Brooks | 1,586 |
| 04354 | Palermo | 1,447 |
| 04973 | Searsmont | 1,415 |
| 04438 | Frankfort | 1,323 |
| 04951 | Monroe | 1,079 |
| 04987 | Troy | 962 |
| 04949 | Liberty | 884 |
| 04922 | Burnham | 829 |
| 04848 | Islesboro | 617 |