Montana Area Codes — 1 Codes
Montana has 1 North American Numbering Plan area code, covering about 1,116,057 people. The table lists each code with its largest towns, population and overlaps.
All area codes in Montana
| Area code | Largest towns | Population | ZIP codes | Overlaps |
|---|---|---|---|---|
| 406 | Billings, Missoula, Bozeman | 1,116,057 | 386 | — |
Largest cities in Montana
Billings 406Missoula 406Bozeman 406Great Falls 406Kalispell 406Helena 406Butte 406Belgrade 406Columbia Falls 406Hamilton 406Whitefish 406Livingston 406Stevensville 406Laurel 406Havre 406Polson 406Miles City 406Libby 406Anaconda 406Bigfork 406Lewistown 406Sidney 406
Frequently asked questions
How many area codes does Montana have?
Montana uses 1 area codes.
What is the main area code in Montana?
406 covers the largest population in Montana.
How do I find the area code for a town?
Open the town in the city list above; each town page lists every area code assigned to it.