| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2021) |
|---|
| Bangor | Standard | $446,410 |
| Bradford | Standard | $126,150 |
| Bradley | Standard | $170,310 |
| Brewer | Standard | $560,190 |
| Burlington | Standard | $93,930 |
| Greenbush | Standard | $140,390 |
| Carmel | Standard | $375,230 |
| Charleston | Standard | $159,810 |
| Corinth | Standard | $443,650 |
| Eddington | Standard | $420,630 |
| Holden | Standard | $537,090 |
| East Millinocket | Standard | $155,200 |
| Etna | Standard | $140,930 |
| Exeter | Standard | $133,430 |
| Hampden | Standard | $523,100 |
| Howland | Standard | $151,920 |
| Hudson | Standard | $149,070 |
| Kenduskeag | Standard | $150,850 |
| Lagrange | Standard | $152,770 |
| Lee | Standard | $163,420 |
| Levant | Standard | $244,600 |
| Lincoln | Standard | $534,170 |
| Mattawamkeag | Standard | $127,650 |
| Medway | Standard | $140,780 |
| Milford | Standard | $417,070 |
| Millinocket | Standard | $263,830 |
| Milo | Standard | $139,580 |
| Old Town | Standard | $675,660 |
| Orono | Standard | $349,840 |
| Orrington | Standard | $366,220 |
| Passadumkeag | Standard | $132,830 |
| Springfield | Standard | $130,500 |
| Stetson | Standard | $155,540 |
| West Enfield | Standard | $166,210 |
| Winn | Standard | $143,370 |
| Wytopitlock | Standard | $82,070 |
| Patten | Standard | $166,920 |
| Stacyville | Standard | $73,120 |
| Smyrna Mills | Standard | $153,180 |
| Corinna | Standard | $152,940 |
| Dexter | Standard | $278,330 |
| Dixmont | Standard | $223,040 |
| Garland | Standard | $148,920 |
| Newport | Standard | $339,020 |
| Palmyra | Standard | $159,840 |
| Plymouth | Standard | $141,900 |
Source: US Internal Revenue Service