RANKING · 2024 ACS · 29 SHOWN OF 29

Largest households, Utah counties

Utah counties ranked by average household size (2024 ACS). This list covers the 29 counties in Utah that qualify, ranked against each other statewide. The median across all 29 is 2.89. Biggest climber in the top 100 since 2020: Duchesne County, UT, up 9 places to #14.

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SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

01▲1Utah County, UTUT759,8593.39−3%

02▲1Morgan County, UTUT13,3833.38+2%

03▲3Tooele County, UTUT87,4613.30+7%

04Juab County, UTUT13,5673.220%

05▲2Davis County, UTUT381,2273.18−1%

06▲7Box Elder County, UTUT65,3203.11+2%

07▲1San Juan County, UTUT14,5423.09−5%

08▲2Cache County, UTUT145,0003.05−1%

09▲2Piute County, UTUT1,5093.04+10%

10▲2Sanpete County, UTUT31,4533.04−3%

11▲3Iron County, UTUT67,1413.03+7%

12▲4Millard County, UTUT14,0573.02+1%

13▼8Uintah County, UTUT38,2783.02+2%

14▲9Duchesne County, UTUT20,8562.90+11%

15▲7Sevier County, UTUT22,8272.89+2%

16▲8Emery County, UTUT10,1772.88+2%

17▼8Wasatch County, UTUT38,5142.83−8%

18▼1Weber County, UTUT278,1742.830%

19▼18Rich County, UTUT2,6872.82−1%

20▲1Washington County, UTUT213,6702.78−4%

21▼2Salt Lake County, UTUT1,220,9162.77−6%

22▼4Beaver County, UTUT7,3012.75−6%

23▼3Summit County, UTUT43,1412.72+5%

24▼9Daggett County, UTUT9342.49+14%

25▲3Carbon County, UTUT20,6802.48−1%

26▲1Garfield County, UTUT5,2562.42+4%

27▼1Kane County, UTUT8,5972.28+4%

28▼3Wayne County, UTUT2,5872.22−26%

29Grand County, UTUT9,7902.11−12%

SHOWING 1–29 OF 29

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES