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. The median across all 29 is +6.4%. Biggest climber in the top 100 since 2020: Summit County, UT, up 16 places to #5.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Daggett County, UTUT934-0.1%−33.6 pts

02▲5San Juan County, UTUT14,542+0.2%−14.0 pts

03▲8Grand County, UTUT9,790+1.3%−26.9 pts

04▲1Carbon County, UTUT20,680+1.3%+0.4 pts

05▲16Summit County, UTUT43,141+1.9%−89.8 pts

06▲13Salt Lake County, UTUT1,220,916+3.0%−20.7 pts

07▲6Beaver County, UTUT7,301+3.2%−22.8 pts

08▼2Garfield County, UTUT5,256+3.4%−15.6 pts

09▼6Emery County, UTUT10,177+3.6%−1.5 pts

10▼8Wayne County, UTUT2,587+4.1%−11.2 pts

11▼7Piute County, UTUT1,509+4.9%−7.4 pts

12▲11Davis County, UTUT381,227+5.1%−22.1 pts

13▼4Sevier County, UTUT22,827+6.1%−16.0 pts

14▲3Weber County, UTUT278,174+6.1%−18.0 pts

15▼3Duchesne County, UTUT20,856+6.4%−7.2 pts

16Rich County, UTUT2,687+7.1%−6.6 pts

17▼2Uintah County, UTUT38,278+7.5%−6.1 pts

18▼8Millard County, UTUT14,057+8.3%−1.1 pts

19▲8Morgan County, UTUT13,383+8.8%−20.1 pts

20▲2Cache County, UTUT145,000+8.9%−21.3 pts

21▼13Sanpete County, UTUT31,453+10.6%−29.4 pts

22▲7Wasatch County, UTUT38,514+10.7%−40.1 pts

23▼9Kane County, UTUT8,597+12.1%−4.8 pts

24▼4Box Elder County, UTUT65,320+13.3%−3.9 pts

25▼7Juab County, UTUT13,567+15.1%−26.5 pts

26Utah County, UTUT759,859+15.2%−24.6 pts

27▼3Iron County, UTUT67,141+17.2%−45.3 pts

28Washington County, UTUT213,670+18.5%−67.5 pts

29▼4Tooele County, UTUT87,461+20.3%−32.8 pts

SHOWING 1–29 OF 29

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES