Ranking of New Hampshire Counties By Non-Hispanic White Alone Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the New Hampshire Non-Hispanic White Alone population (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 246,943. Among all New Hampshire counties, Hillsborough County had the highest Non-Hispanic White Alone population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (65,401), followed by Rockingham County (53,847), and Merrimack County (30,404).

The chart below shows the top 10 New Hampshire counties, and the table below shows the ranking of all New Hampshire counties.

You can see similar information for other educational attainments, and for other races and ethnicities.

You can also see similar information for other states and for the United States.

Ranking of New Hampshire Counties By Non-Hispanic White Alone Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
Hillsborough County
Rockingham County
Merrimack County
Strafford County
Cheshire County
Grafton County
Belknap County
Sullivan County
Carroll County
Coos County
Ranking of New Hampshire Counties By Non-Hispanic White Alone Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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Rank County Number of People
1 Hillsborough County 65401
2 Rockingham County 53847
3 Merrimack County 30404
4 Strafford County 21213
5 Cheshire County 16596
6 Grafton County 15337
7 Belknap County 13296
8 Sullivan County 11578
9 Carroll County 10509
10 Coos County 8762