Ranking of Maine Counties By Percentage of American Indian and Alaska Native 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 percentage of the Maine American Indian and Alaska Native Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 11.88%. Among all Maine counties, Kennebec County had the highest percentage of its American Indian and Alaska Native Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (31.62%), followed by Androscoggin County (23.81%), and Aroostook County (18.48%).

The chart below shows the top 10 Maine counties, and the table below shows the ranking of all Maine 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 Maine Counties By Percentage of American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Kennebec County
Androscoggin County
Aroostook County
Lincoln County
Cumberland County
Washington County
Somerset County
Knox County
Oxford County
Sagadahoc County
Ranking of Maine Counties By Percentage of American Indian and Alaska Native Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Percentage of Population (Aged 25yrs+) (%)
1 Kennebec County 31.62
2 Androscoggin County 23.81
3 Aroostook County 18.48
4 Lincoln County 17.86
5 Cumberland County 14.88
6 Washington County 14.35
7 Somerset County 9.90
8 Knox County 9.21
9 Oxford County 9.17
10 Sagadahoc County 7.35
11 Hancock County 4.87
12 Penobscot County 2.70
13 Waldo County 1.54
14 Franklin County 0.00
14 Piscataquis County 0.00
14 York County 0.00