Ranking of Arizona Counties By Total Voting-age Population (18yrs and over) from Census 2020
Updated on August 22, 2023.
According to the data from the US 2020 Census, as at April 2020, among all the counties in Arizona, Maricopa County had the highest voting-age population (18 years and over) (3.38M), followed by Pima County (834.27K), and Pinal County (325.64K).
The chart below shows the top 10 counties with high voting-age population, and the table below shows the ranking of all Arizona counties based on voting-age population.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Arizona Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Arizona Counties By Total Voting-age Population from Census 2020
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| Rank | County | Voting-age Population |
|---|---|---|
| 1 | Maricopa County | 3382386 |
| 2 | Pima County | 834265 |
| 3 | Pinal County | 325640 |
| 4 | Yavapai County | 199136 |
| 5 | Mohave County | 177461 |
| 6 | Yuma County | 153169 |
| 7 | Coconino County | 115992 |
| 8 | Cochise County | 99330 |
| 9 | Navajo County | 79208 |
| 10 | Apache County | 49105 |
| 11 | Gila County | 43006 |
| 12 | Santa Cruz County | 35215 |
| 13 | Graham County | 27715 |
| 14 | La Paz County | 13505 |
| 15 | Greenlee County | 6843 |