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.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Utah County, UTUT759,859+100,460−4%

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

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

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

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

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

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

08Iron County, UTUT67,141+9,852−24%

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

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

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

12Uintah County, UTUT38,278+2,658−12%

13Juab County, UTUT13,567+1,781−26%

14Sevier County, UTUT22,827+1,305−62%

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

16Morgan County, UTUT13,383+1,088−32%

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

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

19Summit County, UTUT43,141+784−94%

20Emery County, UTUT10,177+352−33%

21Carbon County, UTUT20,680+268+38%

22Beaver County, UTUT7,301+229−82%

23Rich County, UTUT2,687+177−25%

24Garfield County, UTUT5,256+173−77%

25Grand County, UTUT9,790+121−94%

26Wayne County, UTUT2,587+101−70%

27Piute County, UTUT1,509+71−55%

28San Juan County, UTUT14,542+24−99%

29Daggett County, UTUT934-1−100%

SHOWING 1–29 OF 29

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