RANKING · 2000 CENSUS · 15 SHOWN OF 15

Oldest by median age, Arizona counties · 2000

Arizona counties ranked by median age of residents (2000 ACS). This list covers the 15 counties in Arizona that qualify, ranked against each other statewide. The median across all 15 is 33.9.

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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 1990

01La Paz County, AZAZ16,71146.8+29%

02Yavapai County, AZAZ252,55244.5+5%

03Mohave County, AZAZ228,10242.9+7%

04Gila County, AZAZ53,80142.3+9%

05Pinal County, AZAZ539,38037.1+13%

06Cochise County, AZAZ126,33236.9+12%

07Pima County, AZAZ1,074,68535.7+9%

08Yuma County, AZAZ224,44933.9+12%

09Greenlee County, AZAZ9,31233.6+6%

10Maricopa County, AZAZ4,689,55833.0+3%

11Santa Cruz County, AZAZ50,02031.8+9%

12Graham County, AZAZ40,15730.9+3%

13Navajo County, AZAZ109,94630.2+13%

14Coconino County, AZAZ144,36829.6+12%

15Apache County, AZAZ64,44527.0+14%

SHOWING 1–15 OF 15

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