RANKING · 2020 CENSUS · 15 SHOWN OF 15

Oldest by median age, Arizona counties · 2020

Arizona counties ranked by median age of residents (2020 ACS). This list covers the 15 counties in Arizona that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Yavapai County, AZAZ252,55255.5+25%

02La Paz County, AZAZ16,71154.6+17%

03Mohave County, AZAZ228,10253.8+25%

04Gila County, AZAZ53,80151.7+22%

05Cochise County, AZAZ126,33244.0+19%

06Pima County, AZAZ1,074,68541.2+15%

07Pinal County, AZAZ539,38040.4+9%

08Santa Cruz County, AZAZ50,02040.2+26%

09Navajo County, AZAZ109,94639.4+30%

10Apache County, AZAZ64,44538.3+42%

11Maricopa County, AZAZ4,689,55837.2+13%

12Yuma County, AZAZ224,44937.1+9%

13Greenlee County, AZAZ9,31234.2+2%

14Graham County, AZAZ40,15733.8+9%

15Coconino County, AZAZ144,36832.5+10%

SHOWING 1–15 OF 15

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