RANKING · 2024 ACS · 44 SHOWN OF 44

Largest households, Idaho counties

Idaho counties ranked by average household size (2024 ACS). This list covers the 44 counties in Idaho that qualify, ranked against each other statewide. The median across all 44 is 2.65. Biggest climber in the top 100 since 2020: Bear Lake County, ID, up 23 places to #10.

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SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2010

01Madison County, IDID55,1723.24−7%

02Jefferson County, IDID35,2973.23+3%

03▲3Bingham County, IDID51,1533.05−1%

04▲11Camas County, IDID1,3163.04+7%

05▼2Franklin County, IDID15,8893.04−1%

06▼1Jerome County, IDID26,3623.02+3%

07▼3Cassia County, IDID26,3972.95+2%

08▲16Clark County, IDID7832.93+14%

09Bonneville County, IDID135,7712.90+3%

10▲23Bear Lake County, IDID6,7272.89+22%

11▼1Fremont County, IDID14,2082.880%

12▼4Canyon County, IDID275,1232.87−1%

13▼6Lincoln County, IDID5,6032.87+6%

14▲2Caribou County, IDID7,2522.86+14%

15▼4Power County, IDID8,2462.86−1%

16▲6Owyhee County, IDID12,6612.84+1%

17▼4Valley County, IDID12,8312.82+26%

18▼1Gooding County, IDID16,4462.77+2%

19▲6Payette County, IDID27,8242.74+1%

20▼8Minidoka County, IDID22,9112.73−5%

21▲5Gem County, IDID21,7732.66+4%

22▼3Twin Falls County, IDID97,5392.65−1%

23▼9Teton County, IDID13,2542.65+7%

24▲11Adams County, IDID5,0132.63+14%

25▲13Washington County, IDID11,5832.61+5%

26▼3Bannock County, IDID91,5912.58−3%

27▼6Boundary County, IDID13,9972.580%

28▲6Elmore County, IDID29,4652.54−8%

29▲1Kootenai County, IDID191,8642.53+3%

30▼3Ada County, IDID546,1412.49−2%

31Bonner County, IDID54,4202.49+13%

32Idaho County, IDID17,8742.48+7%

33▼13Butte County, IDID2,7832.48+2%

34▼6Benewah County, IDID10,5082.47+3%

35▼6Oneida County, IDID5,0852.46−9%

36Nez Perce County, IDID42,9052.40+1%

37▼19Blaine County, IDID25,5172.36+3%

38▲2Shoshone County, IDID14,1302.35+7%

39▲5Lemhi County, IDID8,4742.34+6%

40▲1Boise County, IDID8,5452.290%

41▼4Latah County, IDID41,8422.28+1%

42▼3Lewis County, IDID3,7042.280%

43▼1Clearwater County, IDID9,1182.27+3%

44▼1Custer County, IDID4,6362.17−3%

SHOWING 1–44 OF 44

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