RANKING · 2025 ESTIMATES · 29 SHOWN OF 29

Fastest shrinking, Utah counties

Utah counties with the steepest population decline 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 growing Most population gained Most population lost Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Daggett County, UTUT934-0.1%−100%

02San Juan County, UTUT14,542+0.2%−99%

03Grand County, UTUT9,790+1.3%−96%

04Carbon County, UTUT20,680+1.3%+37%

05Summit County, UTUT43,141+1.9%−98%

06Salt Lake County, UTUT1,220,916+3.0%−87%

07Beaver County, UTUT7,301+3.2%−88%

08Garfield County, UTUT5,256+3.4%−82%

09Emery County, UTUT10,177+3.6%−30%

10Wayne County, UTUT2,587+4.1%−73%

11Piute County, UTUT1,509+4.9%−60%

12Davis County, UTUT381,227+5.1%−81%

13Sevier County, UTUT22,827+6.1%−73%

14Weber County, UTUT278,174+6.1%−75%

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

16Rich County, UTUT2,687+7.1%−48%

17Uintah County, UTUT38,278+7.5%−45%

18Millard County, UTUT14,057+8.3%−12%

19Morgan County, UTUT13,383+8.8%−69%

20Cache County, UTUT145,000+8.9%−71%

21Sanpete County, UTUT31,453+10.6%−73%

22Wasatch County, UTUT38,514+10.7%−79%

23Kane County, UTUT8,597+12.1%−29%

24Box Elder County, UTUT65,320+13.3%−23%

25Juab County, UTUT13,567+15.1%−64%

26Utah County, UTUT759,859+15.2%−62%

27Iron County, UTUT67,141+17.2%−72%

28Washington County, UTUT213,670+18.5%−78%

29Tooele County, UTUT87,461+20.3%−62%

SHOWING 1–29 OF 29

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