Ranking of Idaho Counties By Percentage of Non-Hispanic 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 percentage of the Idaho Non-Hispanic White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 5.95%. Among all Idaho counties, Camas County had the highest percentage of its Non-Hispanic White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (18.41%), followed by Owyhee County (15.96%), and Gooding County (14.36%).

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 Non-Hispanic White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Camas County
Owyhee County
Gooding County
Benewah County
Custer County
Shoshone County
Boundary County
Butte County
Gem County
Minidoka County
Ranking of Idaho Counties By Percentage of Non-Hispanic White 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 Camas County 18.41
2 Owyhee County 15.96
3 Gooding County 14.36
4 Benewah County 13.72
5 Custer County 13.40
6 Shoshone County 11.84
7 Boundary County 11.57
8 Butte County 10.19
9 Gem County 9.87
10 Minidoka County 9.83
11 Jerome County 9.77
12 Lemhi County 9.62
13 Caribou County 9.18
14 Valley County 9.08
15 Lewis County 9.01
16 Lincoln County 8.98
17 Cassia County 8.66
18 Twin Falls County 8.55
19 Clark County 8.30
20 Payette County 8.03
21 Bonner County 7.90
22 Idaho County 7.87
23 Washington County 7.65
24 Power County 7.64
25 Canyon County 7.48
26 Clearwater County 7.13
27 Oneida County 6.94
28 Adams County 6.88
29 Franklin County 6.76
30 Nez Perce County 6.30
31 Bear Lake County 6.29
32 Kootenai County 6.18
33 Jefferson County 5.88
34 Elmore County 5.87
35 Bannock County 5.49
36 Fremont County 5.31
37 Bingham County 5.29
38 Boise County 5.09
39 Bonneville County 4.39
40 Ada County 3.64
41 Latah County 3.36
42 Madison County 3.10
43 Blaine County 2.79
44 Teton County 2.70