RANKING · 2024 ACS · 15 SHOWN OF 15

Oldest by median age, Arizona counties

Arizona counties ranked by median age of residents (2024 ACS). This list covers the 15 counties in Arizona that qualify, ranked against each other statewide. The median across all 15 is 39.5.

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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

01▲1La Paz County, AZAZ16,71160.2+29%

02▼1Yavapai County, AZAZ252,55255.1+24%

03Mohave County, AZAZ228,10253.6+25%

04Gila County, AZAZ53,80151.1+21%

05Cochise County, AZAZ126,33243.0+17%

06▲1Pinal County, AZAZ539,38040.4+9%

07▼1Pima County, AZAZ1,074,68539.8+11%

08▲1Navajo County, AZAZ109,94639.5+31%

09▼1Santa Cruz County, AZAZ50,02037.9+19%

10▲1Maricopa County, AZAZ4,689,55837.6+14%

11▼1Apache County, AZAZ64,44536.6+36%

12▲1Greenlee County, AZAZ9,31236.3+8%

13▼1Yuma County, AZAZ224,44936.1+6%

14Graham County, AZAZ40,15734.9+13%

15Coconino County, AZAZ144,36832.8+11%

SHOWING 1–15 OF 15

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES