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. The median across all 15 is 40.2.

Flip the list · Youngest by median age, US counties →

ArizonaAll states All rankings

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

Download CSV (full list, 15 rows)

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