Arizona Voting-age Population By County in 2021 (ACS-5Yrs)

Based on the US Census ACS-5Yrs estimates, in 2021, the voting-age population of Arizona was 5.47M which was 77.19% of the total Arizona population. Among all Arizona counties, Maricopa had the highest voting-age population (3.33M), followed by Pima (819.44K), and Pinal (325.72K).

On the other hand, the counties with the least voting-age population were: Greenlee (6.93K), La Paz (14.06K), and Graham (28.00K).

The chart and table below shows the voting-age population of each county and the percentage of each county's population that are of voting-age.

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