Ranking of Arizona Counties By Population Density from Census 2020
According to the data from the US 2020 Census, as at April 2020, among all Arizona counties, Maricopa County had the highest population density per square mile (480.40 people per sqr mile), followed by Pima County (113.56 people per sqr mile), and Pinal County (79.25 people per sqr mile).
On the other hand, La Paz County had the lowest population density (3.68 people per sqr mile), followed by Greenlee County (5.19 people per sqr mile), and Apache County (5.90 people per sqr mile).
The chart below shows the top 10 counties with high population density, and the table below shows the ranking of all Arizona counties.
You can also see similar ranking of counties information for other states as well as for all counties in the United States.
| Rank | County | Population Density |
|---|---|---|
| 1 | Maricopa County | 480.40 |
| 2 | Pima County | 113.56 |
| 3 | Pinal County | 79.25 |
| 4 | Santa Cruz County | 38.56 |
| 5 | Yuma County | 36.98 |
| 6 | Yavapai County | 29.08 |
| 7 | Cochise County | 20.20 |
| 8 | Mohave County | 16.00 |
| 9 | Gila County | 11.20 |
| 10 | Navajo County | 10.73 |
| 11 | Graham County | 8.34 |
| 12 | Coconino County | 7.79 |
| 13 | Apache County | 5.90 |
| 14 | Greenlee County | 5.19 |
| 15 | La Paz County | 3.68 |