RANKING · 2020 CENSUS · 27 SHOWN OF 27

Oldest by median age, Montana cities · 2020

Montana cities ranked by median age of residents (2020 ACS). This list covers the 27 cities in Montana that qualify, ranked against each other statewide. The median across all 27 is 38.9.

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SAME RANKING BYCounties States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Bigfork, MTMT5,56555.2+9%

02Anaconda-Deer Lodge County, MTMT9,70949.4+17%

03Hamilton, MTMT5,45147.2+7%

04Orchard Homes, MTMT5,58844.7+13%

05Lewistown, MTMT6,17944.0+3%

06Polson, MTMT5,65343.9+14%

07Whitefish, MTMT9,35843.0+15%

08Livingston, MTMT9,29042.5+5%

09Helena Valley West Central, MTMT8,05642.2+11%

10Butte-Silver Bow, MTMT35,46941.7+7%

11Miles City, MTMT8,45039.8+2%

12Helena, MTMT35,13839.8+3%

13Great Falls, MTMT60,20839.3+4%

14Helena Valley Southeast, MTMT9,10838.9+24%

15Evergreen, MTMT9,61138.8+10%

16Laurel, MTMT7,20538.50%

17Columbia Falls, MTMT5,75338.5+8%

18Billings, MTMT121,23937.8+3%

19Kalispell, MTMT31,85137.70%

20Lockwood, MTMT7,18137.1+9%

21Four Corners, MTMT5,79136.70%

22Helena Valley Northwest, MTMT5,18336.7+4%

23Sidney, MTMT6,21736.7−6%

24Missoula, MTMT78,90335.0+16%

25Havre, MTMT9,26434.60%

26Belgrade, MTMT13,10732.1+10%

27Bozeman, MTMT58,81428.1+11%

SHOWING 1–27 OF 27

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