RANKING · 2024 ACS · 27 SHOWN OF 27

Largest households, Montana cities

Montana cities ranked by average household size (2024 ACS). This list covers the 27 cities in Montana that qualify, ranked against each other statewide. The median across all 27 is 2.28. Biggest climber in the top 100 since 2020: Bigfork, MT, up 9 places to #13.

MontanaAll statesPop > 5KAll rankings

SAME RANKING BYCounties 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 2010

01Helena Valley Northwest, MTMT5,1833.08+14%

02▲1Evergreen, MTMT9,6112.85+18%

03▼1Helena Valley West Central, MTMT8,0562.72+2%

04▲1Four Corners, MTMT5,7912.71+5%

05▲2Lockwood, MTMT7,1812.68−1%

06▼2Helena Valley Southeast, MTMT9,1082.59−2%

07▲4Columbia Falls, MTMT5,7532.48−9%

08▼2Belgrade, MTMT13,1072.44−2%

09▼1Sidney, MTMT6,2172.44+13%

10▼1Kalispell, MTMT31,8512.36+4%

11▼1Orchard Homes, MTMT5,5882.35−21%

12▲1Havre, MTMT9,2642.35−2%

13▲9Bigfork, MTMT5,5652.30+1%

14Laurel, MTMT7,2052.28−1%

15Billings, MTMT121,2392.280%

16▼4Polson, MTMT5,6532.24+1%

17▼1Miles City, MTMT8,4502.23+1%

18▼1Butte-Silver Bow, MTMT35,4692.23+2%

19▼1Great Falls, MTMT60,2082.21−4%

20▲1Bozeman, MTMT58,8142.17+3%

21▼1Missoula, MTMT78,9032.10−4%

22▲1Helena, MTMT35,1382.04+1%

23▲2Lewistown, MTMT6,1792.03−2%

24▲2Livingston, MTMT9,2902.01−3%

25▼6Whitefish, MTMT9,3582.00−6%

26▼2Anaconda-Deer Lodge County, MTMT9,7091.97+3%

27Hamilton, MTMT5,4511.74−10%

SHOWING 1–27 OF 27

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