Ranking of Arizona Counties By 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. Among all Arizona counties, Maricopa County had the highest population with Unclassified ancestry (921.26K), followed by Pima County (189.00K), and Pinal County (101.02K).

The chart and table below shows the top 10 counties with high number of people with 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 Population with Unclassified Ancestry in 2021
Maricopa County
Pima County
Pinal County
Mohave County
Yavapai County
Yuma County
Coconino County
Cochise County
Navajo County
Graham County
Ranking of Arizona Counties By Population with Unclassified Ancestry in 2021
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Rank County Population
1 Maricopa County 921261
2 Pima County 188995
3 Pinal County 101024
4 Mohave County 49776
5 Yavapai County 49283
6 Yuma County 27744
7 Coconino County 24492
8 Cochise County 23433
9 Navajo County 15915
10 Graham County 15115
11 Gila County 11890
12 Santa Cruz County 5354
13 Apache County 4372
14 Greenlee County 3503
15 La Paz County 2610