RANKING · 2025 ESTIMATES · 19 SHOWN OF 19

Largest by population, Montana cities

The most populous Montana cities as of the 2025 population estimates. This list covers the 19 cities in Montana that qualify, ranked against each other statewide. The median across all 19 is 9,358. Biggest climber in the top 100 since 2020: Hamilton, MT, up 8 places to #19.

MontanaAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Billings, MTMT121,239+35%

02Missoula, MTMT78,903+38%

03Great Falls, MTMT60,208+6%

04Bozeman, MTMT58,814+114%

05Butte-Silver Bow, MTMT35,469+5%

06Helena, MTMT35,138+36%

07Kalispell, MTMT31,851+124%

08Belgrade, MTMT13,107+129%

09Anaconda-Deer Lodge County, MTMT9,709+3%

10▲6Whitefish, MTMT9,358+86%

11▲4Livingston, MTMT9,290+36%

12▼2Havre, MTMT9,264−4%

13Miles City, MTMT8,4500%

14▲3Laurel, MTMT7,205+15%

15▲4Sidney, MTMT6,217+30%

16▲4Lewistown, MTMT6,179+6%

17▲6Columbia Falls, MTMT5,753+58%

18▲6Polson, MTMT5,653+40%

19▲8Hamilton, MTMT5,451+47%

SHOWING 1–19 OF 19

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES