Arizona Counties by Population (2026)
by Kristen Carney
Updated: February 9, 2026
The most populous counties in Arizona are Maricopa County with 4,559,748, Pima County at 1,060,490, Pinal County with 469,006, Yavapai County at 245,480, and Mohave County with 220,517. 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 American Community Survey.
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 | 4,559,748 |
| 2 | Pima County | 1,060,490 |
| 3 | Pinal County | 469,006 |
| 4 | Yavapai County | 245,480 |
| 5 | Mohave County | 220,517 |
| 6 | Yuma County | 211,741 |
| 7 | Coconino County | 144,508 |
| 8 | Cochise County | 125,566 |
| 9 | Navajo County | 108,415 |
| 10 | Apache County | 65,341 |
| 11 | Gila County | 53,795 |
| 12 | Santa Cruz County | 48,926 |
| 13 | Graham County | 39,232 |
| 14 | La Paz County | 16,664 |
| 15 | Greenlee County | 9,409 |
|
United States Census Bureau. B01001 SEX BY AGE, 2024 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. January 29, 2026. http://www.census.gov/. |
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