Arizona Population By County in 2021

Based on the US Census Vintage data estimates, in 2021, the population of Arizona was 7,264,877. Among all Arizona counties, Maricopa[object Promise] had the highest population (4,494,693), followed by Pima[object Promise] (1,048,895), and Pinal[object Promise] (448,144). Greenlee[object Promise] was the least populated county (9,377).

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.