| County | Average Income |
| Nantucket |  $48,183 |
| Norfolk | $44,191 |
| Middlesex | $42,289 |
| Barnstable | $36,060 |
| Essex | $35,369 |
| Plymouth | $34,800 |
| Dukes | $33,125 |
| Suffolk | $32,429 |
| Worcester | $31,609 |
| Hampshire | $29,246 |
| Berkshire | $28,939 |
| Franklin | $28,841 |
| Bristol | $28,744 |
| Hampden | $25,646 |