Ranking of Utah 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 Utah (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 6.90%. Among all Utah counties, San Juan County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (13.45%), followed by Uintah County (12.42%), and Piute County (10.80%).

The chart below shows the top 10 Utah counties, and the table below shows the ranking of all Utah 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 Utah Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
San Juan County
Uintah County
Piute County
Millard County
Duchesne County
Beaver County
Sanpete County
Carbon County
Wayne County
Salt Lake County
Ranking of Utah 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 San Juan County 13.45
2 Uintah County 12.42
3 Piute County 10.80
4 Millard County 10.27
5 Duchesne County 10.23
6 Beaver County 9.27
7 Sanpete County 9.01
8 Carbon County 8.52
9 Wayne County 8.31
10 Salt Lake County 8.20
11 Weber County 8.18
12 Sevier County 7.64
13 Tooele County 7.63
14 Juab County 7.48
15 Kane County 7.31
16 Iron County 6.67
17 Washington County 6.31
18 Box Elder County 6.28
19 Grand County 6.24
20 Cache County 5.84
21 Emery County 5.75
22 Summit County 4.96
23 Utah County 4.88
24 Garfield County 4.82
25 Davis County 4.32
26 Daggett County 4.25
27 Wasatch County 3.94
28 Rich County 3.16
29 Morgan County 2.16