14 Counties — massachusetts
| County | Type | Population | Land area |
|---|---|---|---|
| barnstable | County | 222,230 | 396 sq mi |
| berkshire | County | 134,953 | 931 sq mi |
| bristol | County | 534,678 | 556 sq mi |
| dukes | County | 14,987 | 104 sq mi |
| essex | County | 723,419 | 498 sq mi |
| franklin | County | 71,535 | 702 sq mi |
| hampden | County | 456,228 | 619 sq mi |
| hampshire | County | 152,251 | 529 sq mi |
| middlesex | County | 1,465,396 | 824 sq mi |
| nantucket | County | 9,520 | 48 sq mi |
| norfolk | County | 650,308 | 400 sq mi |
| plymouth | County | 472,822 | 661 sq mi |
| suffolk | County | 689,807 | 59 sq mi |
| worcester | County | 750,963 | 1,513 sq mi |