RANKING · 2025 ESTIMATES · 29 SHOWN OF 29

Most population gained, Utah counties

Utah counties that added 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. The median across all 29 is +1,260. Biggest climber in the top 100 since 2020: Emery County, UT, up 9 places to #20.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01▲1Utah County, UTUT759,859+100,460−4%

02▼1Salt Lake County, UTUT1,220,916+35,678−79%

03▲1Washington County, UTUT213,670+33,391−20%

04▼1Davis County, UTUT381,227+18,548−64%

05Weber County, UTUT278,174+15,951−58%

06▲1Tooele County, UTUT87,461+14,763+4%

07▼1Cache County, UTUT145,000+11,846−44%

08▲1Iron County, UTUT67,141+9,852−24%

09▲1Box Elder County, UTUT65,320+7,654+22%

10▼2Wasatch County, UTUT38,514+3,726−27%

11▲6Sanpete County, UTUT31,453+3,016−54%

12Uintah County, UTUT38,278+2,658−12%

13▲1Juab County, UTUT13,567+1,781−26%

14▲2Sevier County, UTUT22,827+1,305−62%

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

16▼3Morgan County, UTUT13,383+1,088−32%

17▲2Millard County, UTUT14,057+1,082+1%

18Kane County, UTUT8,597+930+6%

19▼8Summit County, UTUT43,141+784−94%

20▲9Emery County, UTUT10,177+352−33%

21▲7Carbon County, UTUT20,680+268+38%

22▼1Beaver County, UTUT7,301+229−82%

23▼1Rich County, UTUT2,687+177−25%

24▼1Garfield County, UTUT5,256+173−77%

25▼5Grand County, UTUT9,790+121−94%

26▲1Wayne County, UTUT2,587+101−70%

27▼3Piute County, UTUT1,509+71−55%

28▼2San Juan County, UTUT14,542+24−99%

29▼4Daggett County, UTUT934-1−100%

SHOWING 1–29 OF 29

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