RANKING · 2025 ESTIMATES · 29 SHOWN OF 29

Fastest growing, Utah counties

Utah counties ranked by population growth from the 2020 census to 2025. 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

01Tooele County, UTUT87,461+20.3%−62%

02Washington County, UTUT213,670+18.5%−78%

03Iron County, UTUT67,141+17.2%−72%

04Utah County, UTUT759,859+15.2%−62%

05Juab County, UTUT13,567+15.1%−64%

06Box Elder County, UTUT65,320+13.3%−23%

07Kane County, UTUT8,597+12.1%−29%

08Wasatch County, UTUT38,514+10.7%−79%

09Sanpete County, UTUT31,453+10.6%−73%

10Cache County, UTUT145,000+8.9%−71%

11Morgan County, UTUT13,383+8.8%−69%

12Millard County, UTUT14,057+8.3%−12%

13Uintah County, UTUT38,278+7.5%−45%

14Rich County, UTUT2,687+7.1%−48%

15Duchesne County, UTUT20,856+6.4%−53%

16Weber County, UTUT278,174+6.1%−75%

17Sevier County, UTUT22,827+6.1%−73%

18Davis County, UTUT381,227+5.1%−81%

19Piute County, UTUT1,509+4.9%−60%

20Wayne County, UTUT2,587+4.1%−73%

21Emery County, UTUT10,177+3.6%−30%

22Garfield County, UTUT5,256+3.4%−82%

23Beaver County, UTUT7,301+3.2%−88%

24Salt Lake County, UTUT1,220,916+3.0%−87%

25Summit County, UTUT43,141+1.9%−98%

26Carbon County, UTUT20,680+1.3%+37%

27Grand County, UTUT9,790+1.3%−96%

28San Juan County, UTUT14,542+0.2%−99%

29Daggett County, UTUT934-0.1%−100%

SHOWING 1–29 OF 29

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES