| ZIP Codes: | 44 ZIP Codes (37 Standard, 6 PO Box, 1 Unique) [See All] |
| Area Code: | 207 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:47 PM |
| Population: | 66,643 [See All] |
| FIPS: | 23003 |
| Land Area: | 4,676 sq mi |
| Water Area: | 112 sq mi |
| Coordinates: | 46.6941, -68.2572 |
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66,643 residents live across 44 ZIPs covering 4,676 sq mi, served by 43 distinct USPS-recognized cities.
Population moved from 70,397 to 66,643 from 2014 to 2024 — a -5.3% change. 14 ZIPs gained residents, 24 lost.
The county's wealthiest ZIP 04757 (Mapleton, $84,042 median) and poorest ZIP 04774 (Saint Francis, $32,250) are 56.2 miles apart — a 2.6× income gap across local geography.
Median home values vary 2.6× across this county — from $85,000 in 04746 (Grand Isle) to $221,900 in 04783 (Stockholm).
Density varies 132× across the county — from 2 people/sq mi in 04774 (Saint Francis) to 200 in 04756 (Madawaska).
Educational attainment ranges from 9.4% bachelor's+ in 04760 (Monticello) to 35.0% in 04742 (Fort Fairfield) — the breadth of educational profiles across the area.
Within Maine, this is the #6 most populous of 16 counties and ranks #15 for median household income .
Hosts 1 single-entity Unique ZIP: 04751Defense Finance Accounting .
Weighted by population, the typical household earns about $58,248 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.5% of adults age 25+ hold a bachelor's degree or higher (11,692 of 49,746 reporting).
37 Standard delivery, 6 PO Box only, 1 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
Aroostook County lost 5.3% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 04730 | Houlton | Standard | 10,106 | $61,980 | 279.5 | 1.1% |
| 04736 | Caribou | Standard | 9,025 | $54,368 | 160.1 | -6.7% |
| 04769 | Presque Isle | Standard | 8,736 | $55,768 | 77.6 | -8.0% |
| 04743 | Fort Kent | Standard | 4,770 | $56,422 | 169.1 | 2.6% |
| 04756 | Madawaska | Standard | 3,341 | $56,136 | 16.7 | -0.1% |
| 04742 | Fort Fairfield | Standard | 3,309 | $70,852 | 77.8 | -4.0% |
| 04757 | Mapleton | Standard | 2,627 | $84,042 | 222.5 | -7.6% |
| 04785 | Van Buren | Standard | 2,073 | $41,528 | 102.0 | -25.3% |
| 04750 | Limestone | Standard | 1,815 | $48,750 | 85.1 | -21.6% |
| 04786 | Washburn | Standard | 1,599 | $55,326 | 93.2 | -14.4% |
| 04740 | Easton | Standard | 1,433 | $53,309 | 39.5 | 19.6% |
| 04732 | Ashland | Standard | 1,427 | $49,479 | 300.7 | -21.7% |
| 04758 | Mars Hill | Standard | 1,405 | $65,156 | 35.4 | -5.5% |
| 04747 | Island Falls | Standard | 1,316 | $56,795 | 189.9 | -9.6% |
| 04776 | Sherman | Standard | 999 | $47,115 | 105.8 | 10.8% |
| 04745 | Frenchville | Standard | 971 | $55,461 | 28.5 | -5.2% |
| 04772 | Saint Agatha | Standard | 842 | $75,417 | 36.4 | 28.9% |
| 04739 | Eagle Lake | Standard | 825 | $59,028 | 226.2 | -12.9% |
| 04734 | Blaine | PO Box | 804 | $79,219 | 35.7 | -6.8% |
| 04780 | Smyrna Mills | Standard | 783 | $62,727 | 294.2 | 6.7% |
| 04471 | Orient | Standard | 730 | $47,500 | 122.8 | 20.1% |
| 04760 | Monticello | Standard | 674 | $51,875 | 56.7 | 1.4% |
| 04763 | Oakfield | Standard | 629 | $46,378 | 47.8 | -7.1% |
| 04774 | Saint Francis | Standard | 624 | $32,250 | 410.5 | 1.0% |
| 04773 | Saint David | Standard | 550 | $68,571 | 50.8 | -15.4% |
| 04783 | Stockholm | Standard | 545 | $75,625 | 124.3 | 43.4% |
| 04781 | Wallagrass | Standard | 528 | $49,583 | 34.6 | 8.4% |
| 04762 | New Sweden | Standard | 494 | $58,333 | 34.6 | -21.0% |
| 04735 | Bridgewater | Standard | 492 | $64,750 | 92.4 | -20.4% |
| 04733 | Benedicta | Standard | 465 | $59,050 | 56.2 | 48.1% |
| 04779 | Sinclair | Standard | 446 | $74,438 | 140.9 | 57.0% |
| 04746 | Grand Isle | Standard | 407 | $35,417 | 41.8 | -16.6% |
| 04787 | Westfield | Standard | 382 | $53,542 | 67.3 | -43.8% |
| 04768 | Portage | Standard | 374 | $60,000 | 126.3 | -16.9% |
| 04761 | New Limerick | Standard | 372 | $53,810 | 19.2 | -17.5% |
| 04766 | Perham | Standard | 326 | $62,500 | 52.5 | -28.2% |
| 04497 | Wytopitlock | Standard | 311 | $48,958 | 288.4 | -24.1% |
| 04764 | Oxbow | Standard | 88 | — | 202.6 | 83.3% |
| 04737 | Clayton Lake | PO Box | 0 | — | 0.0 | — |
| 04775 | Sheridan | PO Box | — | — | 0.0 | — |
| 04738 | Crouseville | PO Box | — | — | 0.0 | — |
| 04751 | Limestone | Unique | — | — | 0.0 | — |
| 04741 | Estcourt Station | PO Box | — | — | 130.3 | — |
| 04744 | Fort Kent Mills | PO Box | — | — | 0.0 | — |