RANKING · 2020 CENSUS · 15 SHOWN OF 15

Fastest shrinking, Arizona counties · 2020

Arizona counties with the steepest population decline from the 2010 census to 2020. 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

01La Paz County, AZAZ16,711-19.2%−61.6 pts

02Apache County, AZAZ64,445-7.7%−20.4 pts

03Cochise County, AZAZ126,332-4.5%−25.1 pts

04Navajo County, AZAZ109,946-0.7%−26.2 pts

05Gila County, AZAZ53,801-0.6%−28.3 pts

06Santa Cruz County, AZAZ50,020+0.5%−28.8 pts

07Graham County, AZAZ40,157+3.5%−22.6 pts

08Yuma County, AZAZ224,449+4.2%−45.6 pts

09Pima County, AZAZ1,074,685+6.4%−20.1 pts

10Mohave County, AZAZ228,102+6.5%−59.3 pts

11Coconino County, AZAZ144,368+7.9%−12.5 pts

12Yavapai County, AZAZ252,552+11.9%−43.6 pts

13Pinal County, AZAZ539,380+13.2%−41.3 pts

14Greenlee County, AZAZ9,312+13.3%+6.6 pts

15Maricopa County, AZAZ4,689,558+15.8%−29.0 pts

SHOWING 1–15 OF 15

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS