RANKING · 2020 CENSUS · 27 SHOWN OF 27

Largest households, Montana cities · 2020

Montana cities ranked by average household size (2020 ACS). This list covers the 27 cities in Montana that qualify, ranked against each other statewide. The median across all 27 is 2.26.

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, MTMT5,1832.99+10%

02Helena Valley West Central, MTMT8,0562.95+10%

03Evergreen, MTMT9,6112.87+19%

04Helena Valley Southeast, MTMT9,1082.70+2%

05Four Corners, MTMT5,7912.64+3%

06Belgrade, MTMT13,1072.58+4%

07Lockwood, MTMT7,1812.56−6%

08Sidney, MTMT6,2172.52+17%

09Kalispell, MTMT31,8512.48+10%

10Orchard Homes, MTMT5,5882.45−17%

11Columbia Falls, MTMT5,7532.40−12%

12Polson, MTMT5,6532.35+6%

13Havre, MTMT9,2642.27−6%

14Laurel, MTMT7,2052.26−2%

15Billings, MTMT121,2392.25−1%

16Miles City, MTMT8,4502.24+1%

17Butte-Silver Bow, MTMT35,4692.23+2%

18Great Falls, MTMT60,2082.21−4%

19Whitefish, MTMT9,3582.21+4%

20Missoula, MTMT78,9032.21+1%

21Bozeman, MTMT58,8142.17+3%

22Bigfork, MTMT5,5652.16−5%

23Helena, MTMT35,1382.11+5%

24Anaconda-Deer Lodge County, MTMT9,7092.00+4%

25Lewistown, MTMT6,1792.00−4%

26Livingston, MTMT9,2901.98−4%

27Hamilton, MTMT5,4511.74−10%

SHOWING 1–27 OF 27

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS