RANKING · 2025 ESTIMATES · 29 SHOWN OF 29

Most population lost, Utah counties

Utah counties that lost the most residents from the 2020 census to 2025, by raw count of people rather than percentage. This list covers the 29 counties in Utah that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Daggett County, UTUT934-1−100%

02San Juan County, UTUT14,542+24−99%

03Piute County, UTUT1,509+71−55%

04Wayne County, UTUT2,587+101−70%

05Grand County, UTUT9,790+121−94%

06Garfield County, UTUT5,256+173−77%

07Rich County, UTUT2,687+177−25%

08Beaver County, UTUT7,301+229−82%

09Carbon County, UTUT20,680+268+38%

10Emery County, UTUT10,177+352−33%

11Summit County, UTUT43,141+784−94%

12Kane County, UTUT8,597+930+6%

13Millard County, UTUT14,057+1,082+1%

14Morgan County, UTUT13,383+1,088−32%

15Duchesne County, UTUT20,856+1,260−27%

16Sevier County, UTUT22,827+1,305−62%

17Juab County, UTUT13,567+1,781−26%

18Uintah County, UTUT38,278+2,658−12%

19Sanpete County, UTUT31,453+3,016−54%

20Wasatch County, UTUT38,514+3,726−27%

21Box Elder County, UTUT65,320+7,654+22%

22Iron County, UTUT67,141+9,852−24%

23Cache County, UTUT145,000+11,846−44%

24Tooele County, UTUT87,461+14,763+4%

25Weber County, UTUT278,174+15,951−58%

26Davis County, UTUT381,227+18,548−64%

27Washington County, UTUT213,670+33,391−20%

28Salt Lake County, UTUT1,220,916+35,678−79%

29Utah County, UTUT759,859+100,460−4%

SHOWING 1–29 OF 29

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