| Rank | County | Households |
|---|---|---|
| 1 | Middlesex County, Massachusetts | 577,349 |
| 2 | Worcester County, Massachusetts | 299,089 |
| 3 | Suffolk County, Massachusetts | 286,437 |
| 4 | Essex County, Massachusetts | 284,940 |
| 5 | Norfolk County, Massachusetts | 255,944 |
| 6 | Bristol County, Massachusetts | 210,536 |
| 7 | Plymouth County, Massachusetts | 178,996 |
| 8 | Hampden County, Massachusetts | 177,954 |
| 9 | Barnstable County, Massachusetts | 96,775 |
| 10 | Hampshire County, Massachusetts | 58,921 |
| 11 | Berkshire County, Massachusetts | 55,793 |
| 12 | Franklin County, Massachusetts | 30,362 |
| 13 | Dukes County, Massachusetts | 5,568 |
| 14 | Nantucket County, Massachusetts | 3,745 |
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