Cities in area code 406
Area code 406 serves 260 localities in Montana, led by Billings, Missoula, Helena. The table lists every rate center — the billing locality each prefix is anchored to — with its share of the code's 753 active prefixes.
Ranked by active prefixes, the code's territory runs through Billings, Missoula, Helena, Great Falls, Bozeman, Kalispell, Butte and Miles City, and 251 smaller communities down to single-prefix localities.
Clock-wise the coverage is Mountain.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
Showing 260 of 260
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Billings | 72 | — | 406 |
| Missoula | 46 | — | 406 |
| Helena | 38 | — | 406 |
| Great Falls | 37 | — | 406 |
| Bozeman | 32 | — | 406 |
| Kalispell | 25 | — | 406 |
| Butte | 17 | — | 406 |
| Miles City | 10 | — | 406 |
| Sidney | 9 | — | 406 |
| Livingston | 8 | — | 406 |
| Lewistown | 8 | — | 406 |
| Hamilton | 8 | — | 406 |
| Havre | 7 | — | 406 |
| Shelby | 7 | — | 406 |
| Dillon | 7 | — | 406 |
| Hardin | 7 | — | 406 |
| Libby | 6 | — | 406 |
| Columbus | 6 | — | 406 |
| Glendive | 6 | — | 406 |
| Red Lodge | 6 | — | 406 |
| Laurel | 6 | — | 406 |
| Forsyth | 5 | — | 406 |
| Colstrip | 5 | — | 406 |
| Conrad | 5 | — | 406 |
| Anaconda | 5 | — | 406 |
| Boulder | 4 | — | 406 |
| Glasgow | 4 | — | 406 |
| Cut Bank | 4 | — | 406 |
| Townsend | 4 | — | 406 |
| Manhattan | 4 | — | 406 |
| Polson | 4 | — | 406 |
| Roundup | 4 | — | 406 |
| Belgrade | 4 | — | 406 |
| Whitefish | 4 | — | 406 |
| West Glendive | 4 | — | 406 |
| Baker | 4 | — | 406 |
| Seeley Lake | 3 | — | 406 |
| Thompson Falls | 3 | — | 406 |
| Saint Regis | 3 | — | 406 |
| Pablo | 3 | — | 406 |
| Eureka Rural | 3 | — | 406 |
| Malta | 3 | — | 406 |
| Superior | 3 | — | 406 |
| South Havre | 3 | — | 406 |
| Deer Lodge | 3 | — | 406 |
| Bigfork | 3 | — | 406 |
| Culbertson | 3 | — | 406 |
| Ronan | 3 | — | 406 |
| Terry | 3 | — | 406 |
| West Yellowstone | 3 | — | 406 |
| Fromberg | 3 | — | 406 |
| Saint Ignatius | 3 | — | 406 |
| Columbia Falls | 3 | — | 406 |
| Big Timber | 3 | — | 406 |
| Big Sky | 3 | — | 406 |
| East Glacier Park | 2 | — | 406 |
| Wolf Creek | 2 | — | 406 |
| Divide | 2 | — | 406 |
| Lima | 2 | — | 406 |
| Three Forks | 2 | — | 406 |
| Whitehall | 2 | — | 406 |
| White Sulphur Springs | 2 | — | 406 |
| Canyon Creek | 2 | — | 406 |
| Cascade | 2 | — | 406 |
| Absarokee | 2 | — | 406 |
| Clinton | 2 | — | 406 |
| Browning | 2 | — | 406 |
| Hungry Horse | 2 | — | 406 |
| Somers | 2 | — | 406 |
| North Havre | 2 | — | 406 |
| Hays | 2 | — | 406 |
| Cooke City | 2 | — | 406 |
| Victor | 2 | — | 406 |
| South Miles City | 2 | — | 406 |
| Grass Range | 2 | — | 406 |
| Broadus | 2 | — | 406 |
| Roy | 2 | — | 406 |
| Fairfield | 2 | — | 406 |
| Lame Deer | 2 | — | 406 |
| Circle | 2 | — | 406 |
| Scobey | 2 | — | 406 |
| Frenchtown | 2 | — | 406 |
| Gallatin Gateway | 2 | — | 406 |
| South Wolf Point | 2 | — | 406 |
| Jordan | 2 | — | 406 |
| Finley Point | 2 | — | 406 |
| Silvertip | 2 | — | 406 |
| Wilsall | 2 | — | 406 |
| Swan Lake | 2 | — | 406 |
| Fort Benton | 2 | — | 406 |
| Stevensville | 2 | — | 406 |
| Elmo | 2 | — | 406 |
| North Parkman | 2 | — | 406 |
| Wolf Point | 2 | — | 406 |
| Bridger | 2 | — | 406 |
| Molt | 2 | — | 406 |
| Ennis | 2 | — | 406 |
| Clyde Park | 2 | — | 406 |
| Yellow Bay | 2 | — | 406 |
| Lakeside | 2 | — | 406 |
| Darby | 2 | — | 406 |
| Fairview | 2 | — | 406 |
| Plevna | 2 | — | 406 |
| Richey | 2 | — | 406 |
| Lambert | 2 | — | 406 |
| Ekalaka | 2 | — | 406 |
| Ashland | 2 | — | 406 |
| Wibaux | 2 | — | 406 |
| Gardiner | 2 | — | 406 |
| Olney | 2 | — | 406 |
| Alzada | 2 | — | 406 |
| Sheridan | 2 | — | 406 |
| Marion | 2 | — | 406 |
| Joliet | 2 | — | 406 |
| Neihart | 1 | — | 406 |
| Potomac | 1 | — | 406 |
| Dixon | 1 | — | 406 |
| Fort Shaw | 1 | — | 406 |
| Belt | 1 | — | 406 |
| Valier | 1 | — | 406 |
| Reserve | 1 | — | 406 |
| Drummond | 1 | — | 406 |
| Joplin | 1 | — | 406 |
| Troy | 1 | — | 406 |
| Eureka | 1 | — | 406 |
| Reedpoint | 1 | — | 406 |
| Sweet Grass | 1 | — | 406 |
| North Cut Bank | 1 | — | 406 |
| Kevin Oilmont | 1 | — | 406 |
| Ethridge | 1 | — | 406 |
| Hysham | 1 | — | 406 |
| Wyola | 1 | — | 406 |
| Rosebud | 1 | — | 406 |
| Huntley | 1 | — | 406 |
| Alta | 1 | — | 406 |
| Box Elder | 1 | — | 406 |
| Harlem | 1 | — | 406 |
| Rock Springs | 1 | — | 406 |
| Rudyard | 1 | — | 406 |
| Chinook | 1 | — | 406 |
| Melstone | 1 | — | 406 |
| Lincoln | 1 | — | 406 |
| Hinsdale | 1 | — | 406 |
| North Glasgow | 1 | — | 406 |
| Kremlin | 1 | — | 406 |
| Moore | 1 | — | 406 |
| Gildford | 1 | — | 406 |
| Big Sandy | 1 | — | 406 |
| Turner | 1 | — | 406 |
| Dodson | 1 | — | 406 |
| Westby | 1 | — | 406 |
| Hopp Illiad | 1 | — | 406 |
| North Wolf Point | 1 | — | 406 |
| Hingham | 1 | — | 406 |
| Hobson | 1 | — | 406 |
| South Broadus | 1 | — | 406 |
| Winnett | 1 | — | 406 |
| Devon | 1 | — | 406 |
| North Poplar | 1 | — | 406 |
| South Chester | 1 | — | 406 |
| Winifred | 1 | — | 406 |
| Power | 1 | — | 406 |
| Choteau | 1 | — | 406 |
| Pendroy | 1 | — | 406 |
| Dupuyer | 1 | — | 406 |
| Judith Gap | 1 | — | 406 |
| Flaxville | 1 | — | 406 |
| Dutton | 1 | — | 406 |
| Dagmar | 1 | — | 406 |
| Crooked Creek | 1 | — | 406 |
| Fallon | 1 | — | 406 |
| Avon | 1 | — | 406 |
| Valley Industrial Park | 1 | — | 406 |
| Fort Peck | 1 | — | 406 |
| Saco | 1 | — | 406 |
| Melville | 1 | — | 406 |
| North Broadus | 1 | — | 406 |
| Augusta | 1 | — | 406 |
| Stanford | 1 | — | 406 |
| Denton | 1 | — | 406 |
| Ryegate | 1 | — | 406 |
| West Squaw Gap | 1 | — | 406 |
| Martinsdale | 1 | — | 406 |
| North Ryegate | 1 | — | 406 |
| Bloomfield | 1 | — | 406 |
| Lindsay | 1 | — | 406 |
| Carlyle | 1 | — | 406 |
| Busby | 1 | — | 406 |
| East Conrad | 1 | — | 406 |
| Harlowton | 1 | — | 406 |
| Lavina | 1 | — | 406 |
| Lodge Grass | 1 | — | 406 |
| Charlo | 1 | — | 406 |
| North Hinsdale | 1 | — | 406 |
| South Malta | 1 | — | 406 |
| Rapelje | 1 | — | 406 |
| Belfry | 1 | — | 406 |
| Fort Smith | 1 | — | 406 |
| Broadview | 1 | — | 406 |
| Whitewater | 1 | — | 406 |
| Haugan | 1 | — | 406 |
| Grant | 1 | — | 406 |
| Twin Bridges | 1 | — | 406 |
| Harrison | 1 | — | 406 |
| Wisdom | 1 | — | 406 |
| Warm Springs | 1 | — | 406 |
| Frazer | 1 | — | 406 |
| Alberton | 1 | — | 406 |
| Glentana | 1 | — | 406 |
| Larslan | 1 | — | 406 |
| Arlee | 1 | — | 406 |
| Saint Mary | 1 | — | 406 |
| Highwood | 1 | — | 406 |
| Carter | 1 | — | 406 |
| Geyser | 1 | — | 406 |
| Stockett | 1 | — | 406 |
| Geraldine | 1 | — | 406 |
| Raynesford | 1 | — | 406 |
| Loma | 1 | — | 406 |
| Hot Springs | 1 | — | 406 |
| Nashua | 1 | — | 406 |
| Brady | 1 | — | 406 |
| Condon | 1 | — | 406 |
| Decker | 1 | — | 406 |
| Chester | 1 | — | 406 |
| Opheim | 1 | — | 406 |
| North Frannie | 1 | — | 406 |
| Plentywood | 1 | — | 406 |
| Froid | 1 | — | 406 |
| Ridge | 1 | — | 406 |
| Poplar | 1 | — | 406 |
| Bainville | 1 | — | 406 |
| Savage | 1 | — | 406 |
| Flaxville Rural | 1 | — | 406 |
| Scobey Rural | 1 | — | 406 |
| North Nashua | 1 | — | 406 |
| Brockton | 1 | — | 406 |
| Medicine Lake | 1 | — | 406 |
| Ovando | 1 | — | 406 |
| West Sidney | 1 | — | 406 |
| Plains | 1 | — | 406 |
| Wise River | 1 | — | 406 |
| Jackson | 1 | — | 406 |
| Melrose | 1 | — | 406 |
| Virginia City | 1 | — | 406 |
| Noxon | 1 | — | 406 |
| Custer | 1 | — | 406 |
| Philipsburg | 1 | — | 406 |
| South Alberton | 1 | — | 406 |
| Pompeys Pillar | 1 | — | 406 |
| West Beach | 1 | — | 406 |
| West Glacier | 1 | — | 406 |
| Peerless | 1 | — | 406 |
| Outlook | 1 | — | 406 |
| Sunburst | 1 | — | 406 |
| Musselshell | 1 | — | 406 |
| Froid Rural | 1 | — | 406 |
| Worden | 1 | — | 406 |
| West Camp Crook | 1 | — | 406 |
| Birney | 1 | — | 406 |
FAQ
What is the biggest city in area code 406?
Billings holds the most active prefixes (72), making it the code's largest numbering locality.
How many places does 406 cover?
260 rate centers in Montana hold active 406 prefixes, from Billings down to communities with a single prefix.
Does a 406 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.