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%−139%

02Apache County, AZAZ64,445-2.4%−119%

03Coconino County, AZAZ144,368-0.5%−102%

04Cochise County, AZAZ126,332+0.7%−97%

05La Paz County, AZAZ16,711+0.9%−98%

06Gila County, AZAZ53,801+1.0%−96%

07Pima County, AZAZ1,074,685+3.0%−89%

08Navajo County, AZAZ109,946+3.0%−88%

09Graham County, AZAZ40,157+4.2%−84%

10Santa Cruz County, AZAZ50,020+4.9%−83%

11Maricopa County, AZAZ4,689,558+6.1%−86%

12Yavapai County, AZAZ252,552+6.9%−88%

13Mohave County, AZAZ228,102+7.0%−89%

14Yuma County, AZAZ224,449+10.1%−80%

15Pinal County, AZAZ539,380+26.8%−51%

SHOWING 1–15 OF 15

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES