RANKING · 1990 CENSUS · 29 SHOWN OF 29

Most sparsely populated, Utah counties · 1990

Utah counties with the fewest residents per square mile (2023). This list covers the 29 counties in Utah that qualify, ranked against each other statewide.

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YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Garfield County, UTUT5,2561−16%

02Wayne County, UTUT2,5871−13%

03Daggett County, UTUT9341−25%

04Kane County, UTUT8,5971−15%

05San Juan County, UTUT14,5422−12%

06Millard County, UTUT14,0572−9%

07Rich County, UTUT2,6872−12%

08Piute County, UTUT1,5092−11%

09Juab County, UTUT13,5672−29%

10Grand County, UTUT9,7902−22%

11Beaver County, UTUT7,3012−21%

12Emery County, UTUT10,1772−5%

13Tooele County, UTUT87,4614−35%

14Duchesne County, UTUT20,8564−12%

15Uintah County, UTUT38,2785−12%

16Iron County, UTUT67,1416−38%

17Box Elder County, UTUT65,3206−15%

18Sevier County, UTUT22,8278−18%

19Summit County, UTUT43,1418−48%

20Wasatch County, UTUT38,5149−34%

21Morgan County, UTUT13,3839−22%

22Sanpete County, UTUT31,45310−29%

23Carbon County, UTUT20,68014−1%

24Washington County, UTUT213,67020−46%

25Cache County, UTUT145,00060−23%

26Utah County, UTUT759,859132−28%

27Weber County, UTUT278,174259−19%

28Davis County, UTUT381,227579−21%

29Salt Lake County, UTUT1,220,916964−19%

SHOWING 1–29 OF 29

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES