| Zip Code | City | Population ↓ |
|---|---|---|
| 4730 | Houlton | 10,092 |
| 4736 | Caribou | 9,022 |
| 4769 | Presque Isle | 8,772 |
| 4743 | Fort Kent | 4,701 |
| 4742 | Fort Fairfield | 3,323 |
| 4756 | Madawaska | 3,190 |
| 4757 | Mapleton | 2,635 |
| 4785 | Van Buren | 2,169 |
| 4750 | Limestone | 1,926 |
| 4786 | Washburn | 1,623 |
| 4732 | Ashland | 1,584 |
| 4758 | Mars Hill | 1,438 |
| 4740 | Easton | 1,341 |
| 4747 | Island Falls | 1,295 |
| 4776 | Sherman | 955 |
| 4780 | Smyrna Mills | 899 |
| 4772 | Saint Agatha | 885 |
| 4745 | Frenchville | 872 |
| 4734 | Blaine | 832 |
| 4739 | Eagle Lake | 791 |
| 4760 | Monticello | 713 |
| 4773 | Saint David | 691 |
| 4459 | Mattawamkeag | 688 |
| 4763 | Oakfield | 656 |
| 4774 | Saint Francis | 609 |
| 4471 | Orient | 585 |
| 4781 | Wallagrass | 513 |
| 4762 | New Sweden | 505 |
| 4787 | Westfield | 484 |
| 4735 | Bridgewater | 483 |
| 4733 | Benedicta | 483 |
| 4761 | New Limerick | 465 |
| 4783 | Stockholm | 458 |
| 4768 | Portage | 397 |
| 4746 | Grand Isle | 392 |
| 4497 | Wytopitlock | 345 |
| 4779 | Sinclair | 333 |
| 4766 | Perham | 327 |
| 4451 | Kingman | 265 |
| 4764 | Oxbow | 14 |
| 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).