RANKING · 2020 CENSUS · 27 SHOWN OF 27

Fastest shrinking, Montana cities · 2020

Montana cities with the steepest population decline from the 2010 census to 2020. This list covers the 27 cities in Montana that qualify, ranked against each other statewide.

Flip the list · Fastest growing, US cities →

MontanaAll statesPop > 5KAll rankings

SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Miles City, MTMT8,450-0.7%−1.0 pts

02Havre, MTMT9,264+0.6%+7.3 pts

03Lewistown, MTMT6,179+0.9%+4.8 pts

04Anaconda-Deer Lodge County, MTMT9,709+1.3%+9.7 pts

05Butte-Silver Bow, MTMT35,469+2.9%+1.1 pts

06Great Falls, MTMT60,208+3.3%+0.4 pts

07Orchard Homes, MTMT5,588+3.5%+53.1 pts

08Lockwood, MTMT7,181+5.9%−2.7 pts

09Evergreen, MTMT9,611+7.0%−44.3 pts

10Hamilton, MTMT5,451+7.2%−28.2 pts

11Laurel, MTMT7,205+7.5%−2.5 pts

12Helena Valley West Central, MTMT8,056+10.0%−0.4 pts

13Missoula, MTMT78,903+10.0%−22.9 pts

14Helena Valley Southeast, MTMT9,108+11.4%−43.8 pts

15Billings, MTMT121,239+12.4%+1.7 pts

16Columbia Falls, MTMT5,753+13.2%−4.4 pts

17Helena, MTMT35,138+13.8%+7.9 pts

18Livingston, MTMT9,290+14.1%+11.9 pts

19Polson, MTMT5,653+14.7%−9.5 pts

20Bigfork, MTMT5,565+19.9%–

21Whitefish, MTMT9,358+21.9%+6.7 pts

22Sidney, MTMT6,217+22.3%+30.7 pts

23Kalispell, MTMT31,851+23.2%+3.9 pts

24Helena Valley Northwest, MTMT5,183+35.1%−34.0 pts

25Belgrade, MTMT13,107+41.6%−26.4 pts

26Bozeman, MTMT58,814+43.0%+21.6 pts

27Four Corners, MTMT5,791+87.6%–

SHOWING 1–27 OF 27

Download CSV (full list, 27 rows)

UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS