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.

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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 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS