| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Danforth | Standard | $187,430 |
| Mattawamkeag | Standard | $127,650 |
| Orient | Standard | $145,600 |
| Wytopitlock | Standard | $82,070 |
| Houlton | Standard | $389,490 |
| Ashland | Standard | $146,490 |
| Blaine | PO Box | $147,130 |
| Bridgewater | Standard | $130,000 |
| Caribou | Standard | $433,820 |
| Eagle Lake | Standard | $427,100 |
| Easton | Standard | $149,110 |
| Fort Fairfield | Standard | $293,430 |
| Fort Kent | Standard | $364,370 |
| Frenchville | Standard | $144,630 |
| Grand Isle | Standard | $120,800 |
| Island Falls | Standard | $145,670 |
| Limestone | Standard | $197,110 |
| Madawaska | Standard | $352,000 |
| Mapleton | Standard | $316,420 |
| Mars Hill | Standard | $176,830 |
| Monticello | Standard | $122,080 |
| New Limerick | Standard | $195,760 |
| New Sweden | Standard | $129,130 |
| Oakfield | Standard | $159,670 |
| Patten | Standard | $166,920 |
| Perham | Standard | $118,700 |
| Portage | Standard | $161,400 |
| Presque Isle | Standard | $412,900 |
| Saint Agatha | Standard | $192,940 |
| Saint David | Standard | $169,080 |
| Saint Francis | Standard | $120,730 |
| Sherman | Standard | $134,770 |
| Sinclair | Standard | $235,050 |
| Smyrna Mills | Standard | $153,180 |
| Wallagrass | Standard | $151,780 |
| Stockholm | Standard | $146,840 |
| Van Buren | Standard | $439,450 |
| Washburn | Standard | $149,950 |
| Westfield | Standard | $121,400 |
Source: US Internal Revenue Service