Arizona Population By County in 2020

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2020, the population of Arizona was 7,186,683. Among all Arizona counties, Maricopa had the highest population (4,445,059), followed by Pima (1,045,175), and Pinal (430,187). Greenlee was the least populated county (9,528).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

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

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Arizona Population By County in 2020
Arizona Population By County in 2020
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County Population % of State Population
Apache 65913 0.92
Cochise 125527 1.75
Coconino 145192 2.02
Gila 53351 0.74
Graham 38646 0.54
Greenlee 9528 0.13
La Paz 16569 0.23
Maricopa 4445059 61.85
Mohave 214185 2.98
Navajo 106763 1.49
Pima 1045175 14.54
Pinal 430187 5.99
Santa Cruz 47712 0.66
Yavapai 237217 3.30
Yuma 205659 2.86