41 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 4730 | Houlton | 10,062 |
| 4736 | Caribou | 9,107 |
| 4769 | Presque Isle | 8,736 |
| 4743 | Fort Kent | 4,754 |
| 4742 | Fort Fairfield | 3,321 |
| 4756 | Madawaska | 3,313 |
| 4757 | Mapleton | 2,533 |
| 4785 | Van Buren | 2,018 |
| 4750 | Limestone | 1,828 |
| 4786 | Washburn | 1,686 |
| 4732 | Ashland | 1,535 |
| 4758 | Mars Hill | 1,524 |
| 4740 | Easton | 1,430 |
| 4747 | Island Falls | 1,318 |
| 4772 | Saint Agatha | 942 |
| 4776 | Sherman | 886 |
| 4780 | Smyrna Mills | 882 |
| 4745 | Frenchville | 876 |
| 4734 | Blaine | 854 |
| 4739 | Eagle Lake | 809 |
| 4459 | Mattawamkeag | 703 |
| 4760 | Monticello | 681 |
| 4763 | Oakfield | 653 |
| 4774 | Saint Francis | 602 |
| 4471 | Orient | 597 |
| 4773 | Saint David | 575 |
| 4781 | Wallagrass | 573 |
| 4733 | Benedicta | 550 |
| 4762 | New Sweden | 517 |
| 4735 | Bridgewater | 494 |
| 4783 | Stockholm | 468 |
| 4787 | Westfield | 454 |
| 4761 | New Limerick | 430 |
| 4746 | Grand Isle | 416 |
| 4768 | Portage | 376 |
| 4779 | Sinclair | 364 |
| 4497 | Wytopitlock | 319 |
| 4766 | Perham | 295 |
| 4451 | Kingman | 240 |
| 4764 | Oxbow | 26 |
| 4737 | Clayton Lake | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 41 ZCTAs in Aroostook County, Maine (US Census).