Ranking of New Hampshire Counties By White Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the New Hampshire White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 54,284. Among all New Hampshire counties, Hillsborough County had the highest White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (16,475), followed by Rockingham County (9,474), and Merrimack County (6,583).

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 White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Hillsborough County
Rockingham County
Merrimack County
Strafford County
Grafton County
Cheshire County
Sullivan County
Belknap County
Coos County
Carroll County
Ranking of New Hampshire Counties By White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Number of People
1 Hillsborough County 16475
2 Rockingham County 9474
3 Merrimack County 6583
4 Strafford County 4451
5 Grafton County 4085
6 Cheshire County 3100
7 Sullivan County 2942
8 Belknap County 2924
9 Coos County 2446
10 Carroll County 1804