RANKING · 2025 ESTIMATES · 29 SHOWN OF 29

Most sparsely populated, Utah counties

Utah counties with the fewest residents per square mile (2025). This list covers the 29 counties in Utah that qualify, ranked against each other statewide. The median across all 29 is 11.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most densely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Garfield County, UTUT5,2561+11%

02Wayne County, UTUT2,5871+3%

03Daggett County, UTUT9341+1%

04San Juan County, UTUT14,5422+1%

05Piute County, UTUT1,5092+5%

06Millard County, UTUT14,0572+13%

07Kane County, UTUT8,5972+42%

08Emery County, UTUT10,1772−6%

09Rich County, UTUT2,6873+37%

10Grand County, UTUT9,7903+15%

11Beaver County, UTUT7,3013+22%

12Juab County, UTUT13,5674+65%

13Duchesne County, UTUT20,8566+45%

14Uintah County, UTUT38,2789+52%

15Box Elder County, UTUT65,32011+53%

16▲1Sevier County, UTUT22,82712+21%

17▼1Tooele County, UTUT87,46112+115%

18Carbon County, UTUT20,68014+1%

19▲1Sanpete County, UTUT31,45320+38%

20▼1Iron County, UTUT67,14120+99%

21Morgan County, UTUT13,38322+88%

22Summit County, UTUT43,14123+45%

23Wasatch County, UTUT38,51433+153%

24Washington County, UTUT213,67088+136%

25Cache County, UTUT145,000124+59%

26Utah County, UTUT759,859379+106%

27Weber County, UTUT278,174455+42%

28Davis County, UTUT381,2271,174+60%

29Salt Lake County, UTUT1,220,9161,622+36%

SHOWING 1–29 OF 29

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