RANKING · 2010 CENSUS · 56 SHOWN OF 56

Largest households, Montana counties · 2010

Montana counties ranked by average household size (2023 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide.

MontanaAll states All rankings

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

01Big Horn County, MTMT12,7523.52–

02Glacier County, MTMT13,4633.09–

03Roosevelt County, MTMT10,2423.02–

04Rosebud County, MTMT8,2532.81–

05Broadwater County, MTMT8,4932.76–

06Liberty County, MTMT1,9572.76–

07Wibaux County, MTMT8852.72–

08Blaine County, MTMT6,8602.71–

09Treasure County, MTMT7282.66–

10Pondera County, MTMT6,0722.65–

11Meagher County, MTMT2,1372.63–

12Chouteau County, MTMT5,8652.60–

13Hill County, MTMT16,1672.54–

14McCone County, MTMT1,7202.47–

15Teton County, MTMT6,4962.43–

16Flathead County, MTMT115,4292.43–

17Golden Valley County, MTMT8442.43–

18Garfield County, MTMT1,1482.42–

19Sweet Grass County, MTMT3,7622.42–

20Powder River County, MTMT1,7812.40–

21Powell County, MTMT7,1572.39–

22Mineral County, MTMT5,1852.38–

23Carbon County, MTMT11,4662.37–

24Cascade County, MTMT85,0292.37–

25Stillwater County, MTMT9,4452.37–

26Fallon County, MTMT2,9592.36–

27Missoula County, MTMT123,5132.35–

28Ravalli County, MTMT48,5822.35–

29Jefferson County, MTMT13,3292.35–

30Yellowstone County, MTMT172,6922.35–

31Gallatin County, MTMT128,7402.34–

32Lake County, MTMT33,3922.33–

33Valley County, MTMT7,3852.29–

34Lewis and Clark County, MTMT75,3312.28–

35Wheatland County, MTMT2,1002.28–

36Judith Basin County, MTMT2,1622.27–

37Fergus County, MTMT11,8252.26–

38Beaverhead County, MTMT10,0432.26–

39Richland County, MTMT11,3772.22–

40Carter County, MTMT1,3832.21–

41Phillips County, MTMT4,2032.20–

42Park County, MTMT18,2142.19–

43Sanders County, MTMT14,0622.19–

44Silver Bow County, MTMT36,1182.19–

45Custer County, MTMT12,0342.18–

46Dawson County, MTMT8,6922.17–

47Prairie County, MTMT1,1122.17–

48Toole County, MTMT5,2112.17–

49Musselshell County, MTMT5,5822.13–

50Daniels County, MTMT1,6122.12–

51Petroleum County, MTMT5482.11–

52Granite County, MTMT3,6582.08–

53Lincoln County, MTMT22,3282.08–

54Madison County, MTMT10,0261.97–

55Sheridan County, MTMT3,4361.95–

56Deer Lodge County, MTMT9,7091.92–

SHOWING 1–56 OF 56

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