Ranking of Idaho Counties By Percentage of 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 White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 7.05%. Among all Idaho counties, Clark County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (25.13%), followed by Camas County (20.83%), and Gooding County (19.86%).

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 White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Clark County
Camas County
Gooding County
Jerome County
Owyhee County
Minidoka County
Lincoln County
Power County
Benewah County
Custer County
Ranking of Idaho Counties By Percentage of 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 Clark County 25.13
2 Camas County 20.83
3 Gooding County 19.86
4 Jerome County 18.90
5 Owyhee County 18.11
6 Minidoka County 17.88
7 Lincoln County 16.55
8 Power County 15.04
9 Benewah County 13.84
10 Custer County 13.28
11 Cassia County 13.01
12 Boundary County 11.94
13 Shoshone County 11.73
14 Twin Falls County 11.21
15 Gem County 10.01
16 Butte County 9.75
17 Lemhi County 9.62
18 Caribou County 9.60
19 Fremont County 9.59
20 Canyon County 9.27
21 Payette County 8.98
22 Lewis County 8.86
23 Valley County 8.81
24 Oneida County 8.77
25 Washington County 8.74
26 Idaho County 8.10
27 Bonner County 7.85
28 Clearwater County 7.31
29 Adams County 7.18
30 Elmore County 7.02
31 Nez Perce County 6.88
32 Franklin County 6.78
33 Jefferson County 6.60
34 Bear Lake County 6.52
35 Blaine County 6.41
36 Bingham County 6.15
37 Kootenai County 6.14
38 Bannock County 5.49
39 Bonneville County 5.42
40 Boise County 5.03
41 Teton County 4.17
42 Ada County 4.11
43 Latah County 3.43
44 Madison County 3.30