RANKING · 2020 CENSUS · 29 SHOWN OF 29

Most sparsely populated, Utah counties · 2020

Utah counties with the fewest residents per square mile (2020). This list covers the 29 counties in Utah that qualify, ranked against each other statewide. The median across all 29 is 10.

Flip the list · Most densely populated, US counties →

UtahAll states All rankings

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+7%

02Wayne County, UTUT2,5871−1%

03Daggett County, UTUT9341+2%

04San Juan County, UTUT14,5422+1%

05Piute County, UTUT1,50920%

06Millard County, UTUT14,0572+5%

07Kane County, UTUT8,5972+27%

08Emery County, UTUT10,1772−10%

09Rich County, UTUT2,6872+28%

10Grand County, UTUT9,7903+14%

11Beaver County, UTUT7,3013+18%

12Juab County, UTUT13,5673+43%

13Duchesne County, UTUT20,8566+36%

14Uintah County, UTUT38,2788+41%

15Box Elder County, UTUT65,32010+35%

16Tooele County, UTUT87,46110+78%

17Sevier County, UTUT22,82711+14%

18Carbon County, UTUT20,680140%

19Iron County, UTUT67,14117+70%

20Sanpete County, UTUT31,45318+25%

21Morgan County, UTUT13,38320+72%

22Summit County, UTUT43,14123+42%

23Wasatch County, UTUT38,51430+129%

24Washington County, UTUT213,67074+100%

25Cache County, UTUT145,000114+46%

26Utah County, UTUT759,859329+79%

27Weber County, UTUT278,174429+33%

28Davis County, UTUT381,2271,117+52%

29Salt Lake County, UTUT1,220,9161,574+32%

SHOWING 1–29 OF 29

Download CSV (full list, 29 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS