Ranking of Massachusetts Counties By 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. Among all Massachusetts counties, Middlesex County had the highest population with Scotch Irish ancestry (11.45K), followed by Essex County (5.11K), and Worcester County (4.88K).

The chart and table below shows the top 10 counties with high number of people with Scotch Irish ancestry.

You can see similar information for other states and for other ancestry groups in Massachusetts.

Data Source: US Census Bureau.
Ranking of Massachusetts Counties By Population with Scotch Irish Ancestry in 2021
Middlesex County
Essex County
Worcester County
Plymouth County
Norfolk County
Suffolk County
Barnstable County
Hampden County
Bristol County
Hampshire County
Ranking of Massachusetts Counties By Population with Scotch Irish Ancestry in 2021
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Rank County Population
1 Middlesex County 11447
2 Essex County 5110
3 Worcester County 4878
4 Plymouth County 4808
5 Norfolk County 4018
6 Suffolk County 2606
7 Barnstable County 2187
8 Hampden County 1741
9 Bristol County 1697
10 Hampshire County 1316
11 Franklin County 829
12 Berkshire County 822
13 Nantucket County 130
14 Dukes County 125