RANKING · 2020 CENSUS · 29 SHOWN OF 29

Fastest growing, Utah counties · 2020

Utah counties ranked by population growth from the 2010 census to 2020. This list covers the 29 counties in Utah that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Wasatch County, UTUT38,514+47.8%−3.0 pts

02Washington County, UTUT213,670+30.5%−55.5 pts

03Morgan County, UTUT13,383+29.8%+0.9 pts

04Utah County, UTUT759,859+27.7%−12.2 pts

05Tooele County, UTUT87,461+24.9%−28.3 pts

06Iron County, UTUT67,141+24.1%−38.4 pts

07Davis County, UTUT381,227+18.3%−8.8 pts

08Cache County, UTUT145,000+18.2%−12.0 pts

09Summit County, UTUT43,141+16.6%−75.0 pts

10Box Elder County, UTUT65,320+15.4%−1.8 pts

11Salt Lake County, UTUT1,220,916+15.1%−8.6 pts

12Juab County, UTUT13,567+15.0%−26.6 pts

13Weber County, UTUT278,174+13.4%−10.7 pts

14Rich County, UTUT2,687+10.9%−2.8 pts

15Uintah County, UTUT38,278+9.3%−4.3 pts

16Kane County, UTUT8,597+7.6%−9.4 pts

17Beaver County, UTUT7,301+6.7%−19.3 pts

18Duchesne County, UTUT20,856+5.3%−8.3 pts

19Grand County, UTUT9,790+4.8%−23.4 pts

20Millard County, UTUT14,057+3.8%−5.7 pts

21Sevier County, UTUT22,827+3.5%−18.6 pts

22Sanpete County, UTUT31,453+2.2%−37.8 pts

23San Juan County, UTUT14,542-1.5%−15.7 pts

24Garfield County, UTUT5,256-1.7%−20.7 pts

25Carbon County, UTUT20,680-4.6%−5.6 pts

26Piute County, UTUT1,509-7.6%−20.0 pts

27Emery County, UTUT10,177-10.5%−15.6 pts

28Wayne County, UTUT2,587-10.5%−25.8 pts

29Daggett County, UTUT934-11.7%−45.2 pts

SHOWING 1–29 OF 29

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS