RANKING · 2024 ACS · 15 SHOWN OF 15

Youngest by median age, Arizona counties

Arizona counties with the youngest median age (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

01Coconino County, AZAZ144,36832.8+11%

02Graham County, AZAZ40,15734.9+13%

03▲1Yuma County, AZAZ224,44936.1+6%

04▼1Greenlee County, AZAZ9,31236.3+8%

05▲1Apache County, AZAZ64,44536.6+36%

06▼1Maricopa County, AZAZ4,689,55837.6+14%

07▲1Santa Cruz County, AZAZ50,02037.9+19%

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

09▲1Pima County, AZAZ1,074,68539.8+11%

10▼1Pinal County, AZAZ539,38040.4+9%

11Cochise County, AZAZ126,33243.0+17%

12Gila County, AZAZ53,80151.1+21%

13Mohave County, AZAZ228,10253.6+25%

14▲1Yavapai County, AZAZ252,55255.1+24%

15▼1La Paz County, AZAZ16,71160.2+29%

SHOWING 1–15 OF 15

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