According to the US Census Bureau population estimates, there were 7,278,717 people living in Arizona in 2019. Maricopa County was the most populated county with 4,485,414 residents, followed by Pima County with 1,047,279 residents, and Pinal County with 462,789 residents. Greenlee County with a population of 9,498 was the least populated county in Arizona in 2019.
Use the map below to interactively explore the population of each county in Arizona in 2019. The data can also be explored further by sorting and filtering with the table below.
|County||Population||% of State Population|