RANKING · 2020 CENSUS · 44 SHOWN OF 44

Largest households, Idaho counties · 2020

Idaho counties ranked by average household size (2023 ACS). This list covers the 44 counties in Idaho that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR2010 2020 2024

RANKPLACESTATEPOPAVERAGE HOUSEHOLD SIZEVS 2000

01Madison County, IDID55,1723.32–

02Jefferson County, IDID35,2973.31–

03Franklin County, IDID15,8893.09–

04Cassia County, IDID26,3973.00–

05Jerome County, IDID26,3622.99–

06Bingham County, IDID51,1532.94–

07Lincoln County, IDID5,6032.94–

08Canyon County, IDID275,1232.92–

09Bonneville County, IDID135,7712.83–

10Fremont County, IDID14,2082.81–

11Power County, IDID8,2462.81–

12Minidoka County, IDID22,9112.78–

13Valley County, IDID12,8312.78–

14Teton County, IDID13,2542.74–

15Camas County, IDID1,3162.73–

16Caribou County, IDID7,2522.71–

17Gooding County, IDID16,4462.70–

18Blaine County, IDID25,5172.69–

19Twin Falls County, IDID97,5392.68–

20Butte County, IDID2,7832.65–

21Boundary County, IDID13,9972.62–

22Owyhee County, IDID12,6612.62–

23Bannock County, IDID91,5912.59–

24Clark County, IDID7832.59–

25Payette County, IDID27,8242.59–

26Gem County, IDID21,7732.58–

27Ada County, IDID546,1412.57–

28Benewah County, IDID10,5082.57–

29Oneida County, IDID5,0852.57–

30Kootenai County, IDID191,8642.48–

31Bonner County, IDID54,4202.46–

32Idaho County, IDID17,8742.45–

33Bear Lake County, IDID6,7272.45–

34Elmore County, IDID29,4652.41–

35Adams County, IDID5,0132.40–

36Nez Perce County, IDID42,9052.39–

37Latah County, IDID41,8422.34–

38Washington County, IDID11,5832.34–

39Lewis County, IDID3,7042.32–

40Shoshone County, IDID14,1302.28–

41Boise County, IDID8,5452.26–

42Clearwater County, IDID9,1182.19–

43Custer County, IDID4,6362.16–

44Lemhi County, IDID8,4742.08–

SHOWING 1–44 OF 44

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