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. The median across all 15 is +3.0%. Biggest climber in the top 100 since 2020: Greenlee County, AZ, up 13 places to #1.

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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

01▲13Greenlee County, AZAZ9,312-2.6%−9.4 pts

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

03▲8Coconino County, AZAZ144,368-0.5%−20.9 pts

04▼1Cochise County, AZAZ126,332+0.7%−19.9 pts

05▼4La Paz County, AZAZ16,711+0.9%−41.5 pts

06▼1Gila County, AZAZ53,801+1.0%−26.7 pts

07▲2Pima County, AZAZ1,074,685+3.0%−23.5 pts

08▼4Navajo County, AZAZ109,946+3.0%−22.5 pts

09▼2Graham County, AZAZ40,157+4.2%−21.9 pts

10▼4Santa Cruz County, AZAZ50,020+4.9%−24.4 pts

11▲4Maricopa County, AZAZ4,689,558+6.1%−38.7 pts

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

13▼3Mohave County, AZAZ228,102+7.0%−58.9 pts

14▼6Yuma County, AZAZ224,449+10.1%−39.6 pts

15▼2Pinal County, AZAZ539,380+26.8%−27.6 pts

SHOWING 1–15 OF 15

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES