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

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 669 people in New Hampshire with Celtic ancestry (0.05% of New Hampshire population). Among all New Hampshire counties, Carroll County had the highest percentage of its population with Celtic ancestry (0.31%), followed by Strafford County (0.12%), and Grafton County (0.08%).

The chart and table below shows the top 10 counties with high percentage of its population having Celtic 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 Celtic Ancestry in 2021
Carroll County
Strafford County
Grafton County
Rockingham County
Belknap County
Sullivan County
Coos County
Hillsborough County
Cheshire County
Merrimack County
Ranking of New Hampshire Counties By Percentage of Population with Celtic Ancestry in 2021
0 of 0
Rank County Percentage of Pop. (%)
1 Carroll County 0.31
2 Strafford County 0.12
3 Grafton County 0.08
4 Rockingham County 0.04
5 Belknap County 0.03
5 Sullivan County 0.03
6 Coos County 0.02
6 Hillsborough County 0.02
7 Cheshire County 0.01
7 Merrimack County 0.01