Ranking of Arizona Counties By Percentage of Population with Unclassified Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.45M people in Arizona with Unclassified ancestry (20.41% of Arizona population). Among all Arizona counties, Graham County had the highest percentage of its population with Unclassified ancestry (39.63%), followed by Greenlee County (36.71%), and Pinal County (24.02%).

The chart and table below shows the top 10 counties with high percentage of its population having Unclassified ancestry.

You can see similar information for other states and for other ancestry groups in Arizona.

Data Source: US Census Bureau.
Ranking of Arizona Counties By Percentage of Population with Unclassified Ancestry in 2021
Graham County
Greenlee County
Pinal County
Mohave County
Gila County
Maricopa County
Yavapai County
Cochise County
Pima County
Coconino County
Ranking of Arizona Counties By Percentage of Population with Unclassified Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Graham County 39.63
2 Greenlee County 36.71
3 Pinal County 24.02
4 Mohave County 23.56
5 Gila County 22.35
6 Maricopa County 21.10
7 Yavapai County 21.08
8 Cochise County 18.73
9 Pima County 18.26
10 Coconino County 16.90
11 La Paz County 15.49
12 Navajo County 14.93
13 Yuma County 13.67
14 Santa Cruz County 11.28
15 Apache County 6.58