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Median Age in Montana, by County

Median Age for every county in Montana, ranked. The highest is Meagher County at 58.3 and the lowest is Roosevelt County at 30.9.

Montana: 40.4 · United States: 38.9 · median county in Montana: 44.3

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#County Median Age
1Meagher County58.3
2Prairie County57.8
3Carter County56.9
4Sanders County54.6
5Daniels County53.4
6McCone County53.2
7Granite County53.0
8Lincoln County52.8
9Madison County52.2
10Treasure County52.0
11Petroleum County51.6
12Musselshell County51.3
13Golden Valley County50.9
14Carbon County50.4
15Mineral County50.0
16Deer Lodge County49.9
17Ravalli County48.7
18Powder River County47.3
19Jefferson County47.1
20Sweet Grass County47.0
21Stillwater County46.7
22Judith Basin County46.2
23Wheatland County46.2
24Park County46.0
25Broadwater County45.9
26Powell County45.8
27Phillips County45.6
28Fergus County44.4
29Lake County44.3
30Valley County44.3
31Garfield County43.3
32Beaverhead County43.2
33Sheridan County43.1
34Chouteau County43.0
35Dawson County43.0
36Custer County42.7
37Teton County42.3
38Flathead County42.2
39Pondera County42.0
40Lewis and Clark County41.8
41Wibaux County41.0
42Silver Bow County40.5
43Liberty County39.8
44Yellowstone County39.0
45Cascade County38.6
46Richland County38.4
47Rosebud County38.0
48Toole County37.7
49Fallon County37.5
50Missoula County37.1
51Blaine County35.6
52Hill County34.5
53Gallatin County34.2
54Glacier County33.4
55Big Horn County31.9
56Roosevelt County30.9

Half of residents are older than this and half are younger.

Source: ACS 2020-2024 5-Year Estimates, 2024.

Montana ranks 12th of 52 states for median age.

Median Age in other states

Other statistics for Montana by county