Ranking of New Hampshire Counties By Percentage of 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 percentage of the New Hampshire White Alone population (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 27.55%. Among all New Hampshire counties, Coos County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (38.36%), followed by Sullivan County (37.89%), and Cheshire County (32.11%).

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 Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
Coos County
Sullivan County
Cheshire County
Merrimack County
Belknap County
Carroll County
Strafford County
Grafton County
Hillsborough County
Rockingham County
Ranking of New Hampshire Counties By Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of High School Graduate or Equivalent in 2021
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Rank County Percentage of Population (Aged 25yrs+) (%)
1 Coos County 38.36
2 Sullivan County 37.89
3 Cheshire County 32.11
4 Merrimack County 29.66
5 Belknap County 29.60
6 Carroll County 27.72
7 Strafford County 27.02
8 Grafton County 25.82
9 Hillsborough County 25.61
10 Rockingham County 25.39