Ranking of Idaho Counties By Percentage of Black or African American 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 Idaho Black or African American Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 14.98%. Among all Idaho counties, Lemhi County had the highest percentage of its Black or African American Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (100.00%), followed by Owyhee County (70.73%), and Idaho County (35.29%).

The chart below shows the top 10 Idaho counties, and the table below shows the ranking of all Idaho 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 Idaho Counties By Percentage of Black or African American Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Lemhi County
Owyhee County
Idaho County
Fremont County
Elmore County
Ada County
Bannock County
Canyon County
Jerome County
Kootenai County
Ranking of Idaho Counties By Percentage of Black or African American 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 Lemhi County 100.00
2 Owyhee County 70.73
3 Idaho County 35.29
4 Fremont County 21.43
5 Elmore County 20.29
6 Ada County 20.15
7 Bannock County 13.13
8 Canyon County 10.16
9 Jerome County 8.33
10 Kootenai County 7.91
11 Shoshone County 6.25
12 Bonneville County 5.73
13 Bonner County 0.99
14 Latah County 0.36
15 Adams County 0.00
15 Benewah County 0.00
15 Blaine County 0.00
15 Boise County 0.00
15 Boundary County 0.00
15 Cassia County 0.00
15 Clearwater County 0.00
15 Custer County 0.00
15 Jefferson County 0.00
15 Lewis County 0.00
15 Madison County 0.00
15 Minidoka County 0.00
15 Nez Perce County 0.00
15 Oneida County 0.00
15 Payette County 0.00
15 Twin Falls County 0.00
15 Valley County 0.00
15 Washington County 0.00