RANKING · 2010 CENSUS · 15 SHOWN OF 15

Fastest growing, Arizona counties · 2010

Arizona counties ranked by population growth from the 2000 census to 2010. This list covers the 15 counties in Arizona that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Pinal County, AZAZ539,380+109.1%+100%

02Mohave County, AZAZ228,102+29.1%−56%

03Yavapai County, AZAZ252,552+26.0%−53%

04Maricopa County, AZAZ4,689,558+24.2%−46%

05Santa Cruz County, AZAZ50,020+23.6%−20%

06Yuma County, AZAZ224,449+22.3%−55%

07Pima County, AZAZ1,074,685+16.2%−39%

08Coconino County, AZAZ144,368+15.6%−24%

09Cochise County, AZAZ126,332+11.5%−44%

10Graham County, AZAZ40,157+11.1%−57%

11Navajo County, AZAZ109,946+10.2%−60%

12Gila County, AZAZ53,801+4.4%−84%

13La Paz County, AZAZ16,711+3.9%−91%

14Apache County, AZAZ64,445+3.0%−76%

15Greenlee County, AZAZ9,312-1.3%−119%

SHOWING 1–15 OF 15

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS