Ranking of New Hampshire Counties By Percentage of Population with British Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 10.04K people in New Hampshire with British ancestry (0.73% of New Hampshire population). Among all New Hampshire counties, Merrimack County had the highest percentage of its population with British ancestry (0.98%), followed by Strafford County (0.90%), and Grafton County (0.86%).

The chart and table below shows the top 10 counties with high percentage of its population having British 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 Percentage of Population with British Ancestry in 2021
Merrimack County
Strafford County
Grafton County
Cheshire County
Rockingham County
Sullivan County
Carroll County
Belknap County
Coos County
Hillsborough County
Ranking of New Hampshire Counties By Percentage of Population with British Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Merrimack County 0.98
2 Strafford County 0.90
3 Grafton County 0.86
4 Cheshire County 0.82
5 Rockingham County 0.80
6 Sullivan County 0.77
7 Carroll County 0.70
8 Belknap County 0.59
9 Coos County 0.54
10 Hillsborough County 0.53