Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — RANKINGS/MT/YOUNGEST

ZIP Codes With the Youngest Population in Montana

What this measures. Median age of residents, lowest first. Source: Census American Community Survey, data release 2026-10-12.

# ZIP City County Median age
1 59211 Antelope Sheridan 8.8
2 59031 Garryowen Big Horn 16.2
3 59217 Crane Richland 16.5
4 59411 Babb Glacier 18.3
5 59812 Missoula Missoula 19.1
6 59625 Helena Lewis and Clark 19.4
7 59257 Redstone Sheridan 19.6
8 59482 Sunburst Toole 21.4
9 59043 Lame Deer Rosebud 22.0
10 59022 Crow Agency Big Horn 23.5
11 59841 Pinesdale Ravalli 23.6
12 59225 Frazer Valley 23.9
13 59733 Gold Creek Powell 24.5
14 59226 Froid Roosevelt 25.4
15 59255 Poplar Roosevelt 25.4
16 59537 Loring Phillips 25.9
17 59250 Opheim Valley 26.8
18 59322 Cohagen Garfield 27.2
19 59535 Lloyd Blaine 27.5
20 59418 Buffalo Judith Basin 28.5
21 59448 Heart Butte Pondera 28.5
22 59424 Coffee Creek Fergus 28.7
23 59735 Harrison Madison 28.8
24 59089 Wyola Big Horn 29.5
25 59417 Browning Glacier 29.6
26 59521 Box Elder Hill 30.2
27 59033 Greycliff Sweet Grass 30.8
28 59732 Glen Beaverhead 31.6
29 59066 Pryor Big Horn 31.7
30 59526 Harlem Blaine 31.9
31 59344 Plevna Fallon 32.0
32 59715 Bozeman Gallatin 32.0
33 59718 Bozeman Gallatin 32.4
34 59855 Pablo Lake 32.4
35 59212 Bainville Roosevelt 32.5
36 59531 Joplin Liberty 32.5
37 59801 Missoula Missoula 32.5
38 59002 Acton Yellowstone 32.9
39 59456 Ledger Liberty 32.9
40 59243 Lambert Richland 33.0
41 59351 Volborg Powder River 33.2
42 59527 Hays Blaine 33.2
43 59201 Wolf Point Roosevelt 33.5
44 59213 Brockton Roosevelt 33.5
45 59745 Norris Madison 33.5
46 59834 Frenchtown Missoula 34.0
47 59919 Hungry Horse Flathead 34.0
48 59808 Missoula Missoula 34.5
49 59050 Lodge Grass Big Horn 34.6
50 59847 Lolo Missoula 34.7

Showing the top 50 of 364 ZIP codes in Montana that have this figure . 59211 ranks 1st at 8.8, against 34.7 in 50th place.

Other rankings for Montana

Cite this page

zipcodes.pro. “ZIP Codes With the Youngest Population in Montana.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/mt/youngest

Underlying data is public domain or openly licensed — sources, vintages and licences.