RANKING · 2020 CENSUS · 15 SHOWN OF 15

Youngest by median age, Arizona counties · 2020

Arizona counties with the youngest median age (2020 ACS). This list covers the 15 counties in Arizona that qualify, ranked against each other statewide. The median across all 15 is 40.2.

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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, AZAZ144,36832.5+10%

02Graham County, AZAZ40,15733.8+9%

03Greenlee County, AZAZ9,31234.2+2%

04Yuma County, AZAZ224,44937.1+9%

05Maricopa County, AZAZ4,689,55837.2+13%

06Apache County, AZAZ64,44538.3+42%

07Navajo County, AZAZ109,94639.4+30%

08Santa Cruz County, AZAZ50,02040.2+26%

09Pinal County, AZAZ539,38040.4+9%

10Pima County, AZAZ1,074,68541.2+15%

11Cochise County, AZAZ126,33244.0+19%

12Gila County, AZAZ53,80151.7+22%

13Mohave County, AZAZ228,10253.8+25%

14La Paz County, AZAZ16,71154.6+17%

15Yavapai County, AZAZ252,55255.5+25%

SHOWING 1–15 OF 15

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS