RANKING · 2025 ESTIMATES · 29 SHOWN OF 29

Most densely populated, Utah counties

Utah counties ranked by residents per square mile (2025). This list covers the 29 counties in Utah that qualify, ranked against each other statewide.

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RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Salt Lake County, UTUT1,220,9161,622–

02Davis County, UTUT381,2271,174–

03Weber County, UTUT278,174455–

04Utah County, UTUT759,859379–

05Cache County, UTUT145,000124–

06Washington County, UTUT213,67088–

07Wasatch County, UTUT38,51433–

08Summit County, UTUT43,14123–

09Morgan County, UTUT13,38322–

10Iron County, UTUT67,14120–

11Sanpete County, UTUT31,45320–

12Carbon County, UTUT20,68014–

13Tooele County, UTUT87,46112–

14Sevier County, UTUT22,82712–

15Box Elder County, UTUT65,32011–

16Uintah County, UTUT38,2789–

17Duchesne County, UTUT20,8566–

18Juab County, UTUT13,5674–

19Beaver County, UTUT7,3013–

20Grand County, UTUT9,7903–

21Rich County, UTUT2,6873–

22Emery County, UTUT10,1772–

23Kane County, UTUT8,5972–

24Millard County, UTUT14,0572–

25Piute County, UTUT1,5092–

26San Juan County, UTUT14,5422–

27Daggett County, UTUT9341–

28Wayne County, UTUT2,5871–

29Garfield County, UTUT5,2561–

SHOWING 1–29 OF 29

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