Ranking of New Hampshire 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 16.20K people in New Hampshire with Scotch Irish ancestry. Among all New Hampshire counties, Hillsborough County had the highest population with Scotch Irish ancestry (3.92K), followed by Rockingham County (3.88K), and Merrimack County (1.72K).

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 New Hampshire.

Data Source: US Census Bureau.
Ranking of New Hampshire Counties By Population with Scotch Irish Ancestry in 2021
Hillsborough County
Rockingham County
Merrimack County
Strafford County
Grafton County
Belknap County
Carroll County
Cheshire County
Sullivan County
Coos County
Ranking of New Hampshire Counties By Population with Scotch Irish Ancestry in 2021
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Rank County Population
1 Hillsborough County 3920
2 Rockingham County 3877
3 Merrimack County 1717
4 Strafford County 1640
5 Grafton County 1263
6 Belknap County 1056
7 Carroll County 1035
8 Cheshire County 725
9 Sullivan County 613
10 Coos County 350