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

Updated on September 3, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the population of Wyoming (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 6.26%. Among all Wyoming counties, Big Horn County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (11.27%), followed by Carbon County (9.99%), and Platte County (8.29%).

The chart below shows the top 10 Wyoming counties, and the table below shows the ranking of all Wyoming counties.

You can see similar information for other educational attainments.

You can also see similar information for other states and for the United States.

Ranking of Wyoming Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Big Horn County
Carbon County
Platte County
Niobrara County
Fremont County
Campbell County
Sweetwater County
Crook County
Weston County
Goshen County
Ranking of Wyoming Counties By Percentage of 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 Big Horn County 11.27
2 Carbon County 9.99
3 Platte County 8.29
4 Niobrara County 7.83
5 Fremont County 7.70
6 Campbell County 7.56
7 Sweetwater County 7.29
8 Crook County 7.20
9 Weston County 7.11
10 Goshen County 6.86
11 Converse County 6.67
12 Lincoln County 6.49
13 Uinta County 6.43
14 Natrona County 6.02
15 Laramie County 6.01
16 Washakie County 5.90
17 Sublette County 4.97
18 Park County 4.64
19 Johnson County 4.62
20 Sheridan County 4.19
21 Hot Springs County 4.17
22 Albany County 4.13
23 Teton County 3.97