RANKING · 2025 ESTIMATES · 15 SHOWN OF 15

Fastest shrinking, Arizona counties

Arizona counties with the steepest population decline from the 2020 census to 2025. 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 growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Greenlee County, AZAZ9,312-2.6%−9.4 pts

02Apache County, AZAZ64,445-2.4%−15.1 pts

03Coconino County, AZAZ144,368-0.5%−20.9 pts

04Cochise County, AZAZ126,332+0.7%−19.9 pts

05La Paz County, AZAZ16,711+0.9%−41.5 pts

06Gila County, AZAZ53,801+1.0%−26.7 pts

07Pima County, AZAZ1,074,685+3.0%−23.5 pts

08Navajo County, AZAZ109,946+3.0%−22.5 pts

09Graham County, AZAZ40,157+4.2%−21.9 pts

10Santa Cruz County, AZAZ50,020+4.9%−24.4 pts

11Maricopa County, AZAZ4,689,558+6.1%−38.7 pts

12Yavapai County, AZAZ252,552+6.9%−48.6 pts

13Mohave County, AZAZ228,102+7.0%−58.9 pts

14Yuma County, AZAZ224,449+10.1%−39.6 pts

15Pinal County, AZAZ539,380+26.8%−27.6 pts

SHOWING 1–15 OF 15

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU POPULATION ESTIMATES