RANKING · 1990 CENSUS · 29 SHOWN OF 29

Youngest by median age, Utah counties · 1990

Utah counties with the youngest median age (2023 ACS). This list covers the 29 counties in Utah that qualify, ranked against each other statewide.

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RELATEDOldest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Utah County, UTUT759,85922.5−3%

02Cache County, UTUT145,00023.7−1%

03San Juan County, UTUT14,54224.0−6%

04Sanpete County, UTUT31,45324.2−4%

05Iron County, UTUT67,14124.6+1%

06Davis County, UTUT381,22724.8−7%

07Duchesne County, UTUT20,85625.0−12%

08Emery County, UTUT10,17725.4−16%

09Uintah County, UTUT38,27826.0−10%

10Millard County, UTUT14,05726.0−13%

11Morgan County, UTUT13,38326.3−8%

12Rich County, UTUT2,68726.5−23%

13Box Elder County, UTUT65,32026.9−4%

14Salt Lake County, UTUT1,220,91627.9−4%

15Wasatch County, UTUT38,51427.9−5%

16Tooele County, UTUT87,46128.0+3%

17Washington County, UTUT213,67028.2−9%

18Weber County, UTUT278,17428.9−1%

19Sevier County, UTUT22,82729.0−4%

20Summit County, UTUT43,14130.1−10%

21Juab County, UTUT13,56730.4+15%

22Wayne County, UTUT2,58730.7−10%

23Carbon County, UTUT20,68030.7−9%

24Kane County, UTUT8,59731.4−20%

25Garfield County, UTUT5,25631.5−7%

26Beaver County, UTUT7,30132.0+4%

27Daggett County, UTUT93432.4−17%

28Grand County, UTUT9,79034.0−8%

29Piute County, UTUT1,50939.1+0%

SHOWING 1–29 OF 29

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES