RANKING · 2020 CENSUS · 29 SHOWN OF 29

Oldest by median age, Utah counties · 2020

Utah counties ranked by median age of residents (2020 ACS). This list covers the 29 counties in Utah that qualify, ranked against each other statewide. The median across all 29 is 34.6.

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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

01Daggett County, UTUT93447.6+21%

02Wayne County, UTUT2,58747.3+39%

03Kane County, UTUT8,59744.9+15%

04Piute County, UTUT1,50944.7+15%

05Garfield County, UTUT5,25643.3+28%

06Summit County, UTUT43,14140.8+23%

07Grand County, UTUT9,79040.5+10%

08Carbon County, UTUT20,68038.6+15%

09Emery County, UTUT10,17738.3+27%

10Rich County, UTUT2,68738.0+11%

11Washington County, UTUT213,67037.6+21%

12Sevier County, UTUT22,82736.3+20%

13Millard County, UTUT14,05736.1+21%

14Wasatch County, UTUT38,51435.3+20%

15San Juan County, UTUT14,54234.6+36%

16Beaver County, UTUT7,30134.4+12%

17Sanpete County, UTUT31,45333.7+33%

18Morgan County, UTUT13,38333.6+18%

19Duchesne County, UTUT20,85633.3+18%

20Box Elder County, UTUT65,32033.0+18%

21Weber County, UTUT278,17432.9+12%

22Salt Lake County, UTUT1,220,91632.9+14%

23Uintah County, UTUT38,27831.5+9%

24Tooele County, UTUT87,46131.4+16%

25Davis County, UTUT381,22731.4+17%

26Juab County, UTUT13,56730.7+16%

27Iron County, UTUT67,14128.9+19%

28Cache County, UTUT145,00026.3+10%

29Utah County, UTUT759,85925.9+11%

SHOWING 1–29 OF 29

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