Ranking of Arizona 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 Arizona White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 8.94%. Among all Arizona counties, Yuma 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 (23.02%), followed by Santa Cruz County (19.43%), and Graham County (14.49%).

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, and for other races and ethnicities.

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

Ranking of Arizona Counties By Percentage of White Alone Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Yuma County
Santa Cruz County
Graham County
La Paz County
Mohave County
Pinal County
Cochise County
Greenlee County
Gila County
Apache County
Ranking of Arizona 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 Yuma County 23.02
2 Santa Cruz County 19.43
3 Graham County 14.49
4 La Paz County 14.09
5 Mohave County 11.56
6 Pinal County 10.49
7 Cochise County 10.24
8 Greenlee County 9.77
9 Gila County 9.72
10 Apache County 9.00
11 Maricopa County 8.47
12 Pima County 7.48
13 Navajo County 7.13
14 Yavapai County 6.85
15 Coconino County 3.39