Ranking of Arizona 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 Arizona (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 11.70%. Among all Arizona counties, Yuma County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Less than High School Diploma (25.09%), followed by Santa Cruz County (22.26%), and Apache County (17.82%).
The chart below shows the top 10 Arizona counties, and the table below shows the ranking of all Arizona counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
You may also be interested in:
Related Topics: Arizona ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Arizona Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Items per page:
25
0 of 0
| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Yuma County | 25.09 |
| 2 | Santa Cruz County | 22.26 |
| 3 | Apache County | 17.82 |
| 4 | Graham County | 16.55 |
| 5 | La Paz County | 16.01 |
| 6 | Navajo County | 15.45 |
| 7 | Gila County | 13.06 |
| 8 | Mohave County | 12.55 |
| 9 | Pinal County | 12.43 |
| 10 | Greenlee County | 12.32 |
| 11 | Cochise County | 11.32 |
| 12 | Maricopa County | 11.16 |
| 13 | Pima County | 10.65 |
| 14 | Coconino County | 9.03 |
| 15 | Yavapai County | 8.45 |