RANKING · 2020 CENSUS · 56 SHOWN OF 56

Largest households, Montana counties · 2020

Montana counties ranked by average household size (2023 ACS). This list covers the 56 counties in Montana 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

01Big Horn County, MTMT12,7523.63–

02Roosevelt County, MTMT10,2423.33–

03Glacier County, MTMT13,4633.11–

04Rosebud County, MTMT8,2532.77–

05Blaine County, MTMT6,8602.75–

06Pondera County, MTMT6,0722.75–

07Jefferson County, MTMT13,3292.65–

08Liberty County, MTMT1,9572.63–

09Flathead County, MTMT115,4292.52–

10Lake County, MTMT33,3922.51–

11Richland County, MTMT11,3772.51–

12Broadwater County, MTMT8,4932.48–

13Hill County, MTMT16,1672.47–

14Chouteau County, MTMT5,8652.46–

15Stillwater County, MTMT9,4452.46–

16Ravalli County, MTMT48,5822.42–

17Garfield County, MTMT1,1482.41–

18Sweet Grass County, MTMT3,7622.41–

19Granite County, MTMT3,6582.40–

20Teton County, MTMT6,4962.37–

21Gallatin County, MTMT128,7402.36–

22Lewis and Clark County, MTMT75,3312.35–

23Wheatland County, MTMT2,1002.35–

24Carbon County, MTMT11,4662.34–

25Meagher County, MTMT2,1372.34–

26Missoula County, MTMT123,5132.33–

27Yellowstone County, MTMT172,6922.31–

28Cascade County, MTMT85,0292.30–

29Custer County, MTMT12,0342.30–

30Toole County, MTMT5,2112.30–

31Lincoln County, MTMT22,3282.28–

32Fallon County, MTMT2,9592.26–

33Phillips County, MTMT4,2032.26–

34Prairie County, MTMT1,1122.26–

35Golden Valley County, MTMT8442.25–

36Silver Bow County, MTMT36,1182.23–

37McCone County, MTMT1,7202.21–

38Madison County, MTMT10,0262.21–

39Mineral County, MTMT5,1852.21–

40Petroleum County, MTMT5482.19–

41Sanders County, MTMT14,0622.19–

42Valley County, MTMT7,3852.19–

43Dawson County, MTMT8,6922.15–

44Judith Basin County, MTMT2,1622.15–

45Sheridan County, MTMT3,4362.14–

46Wibaux County, MTMT8852.14–

47Fergus County, MTMT11,8252.13–

48Powder River County, MTMT1,7812.13–

49Beaverhead County, MTMT10,0432.12–

50Musselshell County, MTMT5,5822.10–

51Powell County, MTMT7,1572.05–

52Park County, MTMT18,2142.04–

53Deer Lodge County, MTMT9,7092.00–

54Carter County, MTMT1,3831.96–

55Daniels County, MTMT1,6121.96–

56Treasure County, MTMT7281.84–

SHOWING 1–56 OF 56

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