Ranking of Massachusetts Counties By Percentage of Population with Scotch Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 41.71K people in Massachusetts with Scotch Irish ancestry (0.60% of Massachusetts population). Among all Massachusetts counties, Franklin County had the highest percentage of its population with Scotch Irish ancestry (1.17%), followed by Barnstable County (0.96%), and Nantucket County (0.94%).
The chart and table below shows the top 10 counties with high percentage of its population having Scotch Irish 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 Percentage of Population with Scotch Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Franklin County | 1.17 |
| 2 | Barnstable County | 0.96 |
| 3 | Nantucket County | 0.94 |
| 4 | Plymouth County | 0.91 |
| 5 | Hampshire County | 0.81 |
| 6 | Middlesex County | 0.71 |
| 7 | Berkshire County | 0.64 |
| 7 | Essex County | 0.64 |
| 8 | Dukes County | 0.62 |
| 9 | Worcester County | 0.57 |
| 10 | Norfolk County | 0.56 |
| 11 | Hampden County | 0.37 |
| 12 | Suffolk County | 0.33 |
| 13 | Bristol County | 0.30 |