Arizona Counties by Population (2025)
by Kristen Carney 
Updated: August 7, 2025
The most populous counties in Arizona are Maricopa County with 4,673,096, Pima County at 1,080,149, Pinal County with 513,862, Yavapai County at 252,013, and Mohave County with 226,479. You can get the most current Census population data for all 15 Arizona counties, sorted from the most populous counties in Arizona to the least, according to the 2024 Population Estimates Program.
Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest Arizona counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!
| Rank | County | Population |
|---|---|---|
| 1 | Maricopa County | 4,673,096 |
| 2 | Pima County | 1,080,149 |
| 3 | Pinal County | 513,862 |
| 4 | Yavapai County | 252,013 |
| 5 | Mohave County | 226,479 |
| 6 | Yuma County | 220,310 |
| 7 | Coconino County | 145,161 |
| 8 | Cochise County | 125,773 |
| 9 | Navajo County | 109,516 |
| 10 | Apache County | 64,800 |
| 11 | Gila County | 54,073 |
| 12 | Santa Cruz County | 50,508 |
| 13 | Graham County | 40,242 |
| 14 | La Paz County | 16,992 |
| 15 | Greenlee County | 9,410 |
|
United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2024. Population Division. May 2025. |
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