RANKING · 2020 CENSUS · 29 SHOWN OF 29

Youngest by median age, Utah counties · 2020

Utah counties with the youngest median age (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

01Utah County, UTUT759,85925.9+11%

02Cache County, UTUT145,00026.3+10%

03Iron County, UTUT67,14128.9+19%

04Juab County, UTUT13,56730.7+16%

05Tooele County, UTUT87,46131.4+16%

06Davis County, UTUT381,22731.4+17%

07Uintah County, UTUT38,27831.5+9%

08Weber County, UTUT278,17432.9+12%

09Salt Lake County, UTUT1,220,91632.9+14%

10Box Elder County, UTUT65,32033.0+18%

11Duchesne County, UTUT20,85633.3+18%

12Morgan County, UTUT13,38333.6+18%

13Sanpete County, UTUT31,45333.7+33%

14Beaver County, UTUT7,30134.4+12%

15San Juan County, UTUT14,54234.6+36%

16Wasatch County, UTUT38,51435.3+20%

17Millard County, UTUT14,05736.1+21%

18Sevier County, UTUT22,82736.3+20%

19Washington County, UTUT213,67037.6+21%

20Rich County, UTUT2,68738.0+11%

21Emery County, UTUT10,17738.3+27%

22Carbon County, UTUT20,68038.6+15%

23Grand County, UTUT9,79040.5+10%

24Summit County, UTUT43,14140.8+23%

25Garfield County, UTUT5,25643.3+28%

26Piute County, UTUT1,50944.7+15%

27Kane County, UTUT8,59744.9+15%

28Wayne County, UTUT2,58747.3+39%

29Daggett County, UTUT93447.6+21%

SHOWING 1–29 OF 29

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