| County | Average Income |
| Cumberland |  $32,549 |
| York | $28,496 |
| Sagadahoc | $28,122 |
| Hancock | $28,071 |
| Lincoln | $27,839 |
| Knox | $27,141 |
| Kennebec | $25,652 |
| Androscoggin | $24,268 |
| Penobscot | $23,307 |
| Waldo | $23,020 |
| Oxford | $21,885 |
| Franklin | $21,744 |
| Piscataquis | $21,292 |
| Somerset | $21,025 |
| Aroostook | $21,024 |
| Washington | $20,015 |