Ranking of Massachusetts Counties By Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 260.36K people in Massachusetts with American ancestry. Among all Massachusetts counties, Middlesex County had the highest population with American ancestry (53.34K), followed by Worcester County (50.36K), and Norfolk County (28.09K).
The chart and table below shows the top 10 counties with high number of people with American ancestry.
You can see similar information for other states and for other ancestry groups in Massachusetts.
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Related Topics: Massachusetts ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Massachusetts Counties By Population with American Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Middlesex County | 53342 |
| 2 | Worcester County | 50364 |
| 3 | Norfolk County | 28090 |
| 4 | Hampden County | 23635 |
| 5 | Plymouth County | 22565 |
| 6 | Essex County | 21733 |
| 7 | Suffolk County | 17602 |
| 8 | Bristol County | 16257 |
| 9 | Barnstable County | 9477 |
| 10 | Hampshire County | 7674 |
| 11 | Berkshire County | 5645 |
| 12 | Franklin County | 2826 |
| 13 | Dukes County | 687 |
| 14 | Nantucket County | 467 |