Zip Code | City | Population |
|---|---|---|
| 04730 | Houlton | 10,092 |
| 04736 | Caribou | 9,022 |
| 04769 | Presque Isle | 8,772 |
| 04743 | Fort Kent | 4,701 |
| 04742 | Fort Fairfield | 3,323 |
| 04756 | Madawaska | 3,190 |
| 04757 | Mapleton | 2,635 |
| 04785 | Van Buren | 2,169 |
| 04750 | Limestone | 1,926 |
| 04786 | Washburn | 1,623 |
| 04732 | Ashland | 1,584 |
| 04758 | Mars Hill | 1,438 |
| 04740 | Easton | 1,341 |
| 04747 | Island Falls | 1,295 |
| 04776 | Sherman | 955 |
| 04780 | Smyrna Mills | 899 |
| 04772 | Saint Agatha | 885 |
| 04745 | Frenchville | 872 |
| 04734 | Blaine | 832 |
| 04739 | Eagle Lake | 791 |
| 04760 | Monticello | 713 |
| 04773 | Saint David | 691 |
| 04459 | Mattawamkeag | 688 |
| 04763 | Oakfield | 656 |
| 04774 | Saint Francis | 609 |
| 04471 | Orient | 585 |
| 04781 | Wallagrass | 513 |
| 04762 | New Sweden | 505 |
| 04787 | Westfield | 484 |
| 04735 | Bridgewater | 483 |
| 04733 | Benedicta | 483 |
| 04761 | New Limerick | 465 |
| 04783 | Stockholm | 458 |
| 04768 | Portage | 397 |
| 04746 | Grand Isle | 392 |
| 04497 | Wytopitlock | 345 |
| 04779 | Sinclair | 333 |
| 04766 | Perham | 327 |
| 04451 | Kingman | 265 |
| 04764 | Oxbow | 14 |
| 04737 | Clayton Lake | 0 |