406 area code is a telephone area code in the North American Numbering Plan (NANP) for the entire state of Montana, United States. The area code was one of the original area codes created in 1947.
| Area Code | 406 |
|---|---|
| Major City | Billings |
| Service Date | 01/01/1947 |
| Time Zone | Mountain |
| Overlay Complex | - |
| Location | Montana (MT) |
| Country | United States |
Some of the cities served by area code 406 include Billings, Missoula, Great Falls, Bozeman, Butte-Silver Bow, Helena, Kalispell, Havre, Anaconda-Deer Lodge County and more.
| Area code | City/Town | County |
|---|---|---|
| 406 | Absarokee | Stillwater |
| 406 | Acton | Yellowstone |
| 406 | Alberton | Mineral |
| 406 | Alder | Madison |
| 406 | Alzada | Carter |
| 406 | Anaconda | Deer Lodge |
| 406 | Angela | Rosebud |
| 406 | Antelope | Sheridan |
| 406 | Arlee | Lake |
| 406 | Ashland | Rosebud |
| 406 | Augusta | Lewis And Clark |
| 406 | Avon | Powell |
| 406 | Babb | Glacier |
| 406 | Bainville | Roosevelt |
| 406 | Baker | Fallon |
| 406 | Ballantine | Yellowstone |
| 406 | Basin | Jefferson |
| 406 | Bearcreek | Carbon |
| 406 | Belfry | Carbon |
| 406 | Belgrade | Gallatin |
| 406 | Belt | Cascade |
| 406 | Biddle | Powder River |
| 406 | Big Arm | Lake |
| 406 | Big Sandy | Chouteau |
| 406 | Big Sky | Gallatin |
| 406 | Big Timber | Sweet Grass |
| 406 | Bigfork | Flathead |
| 406 | Bighorn | Treasure |
| 406 | Billings | Yellowstone |
| 406 | Birney | Rosebud |
| 406 | Black Eagle | Cascade |
| 406 | Bloomfield | Dawson |
| 406 | Bonner | Missoula |
| 406 | Boulder | Jefferson |
| 406 | Box Elder | Hill |
| 406 | Boyd | Carbon |
| 406 | Boyes | Carter |
| 406 | Bozeman | Gallatin |
| 406 | Brady | Pondera |
| 406 | Bridger | Carbon |
| 406 | Broadus | Powder River |
| 406 | Broadview | Yellowstone |
| 406 | Brockton | Roosevelt |
| 406 | Brockway | McCone |
| 406 | Browning | Glacier |
| 406 | Brusett | Garfield |
| 406 | Buffalo | Fergus |
| 406 | Busby | Big Horn |
| 406 | Butte | Silver Bow |
| 406 | Bynum | Teton |
| 406 | Cameron | Madison |
| 406 | Canyon Creek | Lewis And Clark |
| 406 | Capitol | Carter |
| 406 | Cardwell | Jefferson |
| 406 | Carter | Chouteau |
| 406 | Cascade | Cascade |
| 406 | Charlo | Lake |
| 406 | Chester | Liberty |
| 406 | Chinook | Blaine |
| 406 | Choteau | Teton |
| 406 | Circle | McCone |
| 406 | Clancy | Jefferson |
| 406 | Clinton | Missoula |
| 406 | Clyde Park | Park |
| 406 | Coffee Creek | Fergus |
| 406 | Cohagen | Garfield |
| 406 | Colstrip | Rosebud |
| 406 | Columbia Falls | Flathead |
| 406 | Columbus | Stillwater |
| 406 | Condon | Missoula |
| 406 | Conner | Ravalli |
| 406 | Conrad | Pondera |
| 406 | Cooke City | Park |
| 406 | Coram | Flathead |
| 406 | Corvallis | Ravalli |
| 406 | Crane | Richland |
| 406 | Crow Agency | Big Horn |
| 406 | Culbertson | Roosevelt |
| 406 | Custer | Yellowstone |
| 406 | Cut Bank | Glacier |
| 406 | Dagmar | Sheridan |
| 406 | Darby | Ravalli |
| 406 | Dayton | Lake |
| 406 | De Borgia | Mineral |
| 406 | Decker | Big Horn |
| 406 | Deer Lodge | Powell |
| 406 | Dell | Beaverhead |
| 406 | Denton | Fergus |
| 406 | Dillon | Beaverhead |
| 406 | Divide | Silver Bow |
| 406 | Dixon | Sanders |
| 406 | Dodson | Phillips |
| 406 | Drummond | Granite |
| 406 | Dupuyer | Pondera |
| 406 | Dutton | Teton |
| 406 | East Glacier Park | Glacier |
| 406 | East Helena | Lewis And Clark |
| 406 | Edgar | Carbon |
| 406 | Ekalaka | Carter |
| 406 | Elliston | Powell |
| 406 | Elmo | Lake |
| 406 | Emigrant | Park |
| 406 | Ennis | Madison |
| 406 | Essex | Flathead |
| 406 | Ethridge | Toole |
| 406 | Eureka | Lincoln |
| 406 | Fairfield | Teton |
| 406 | Fairview | Richland |
| 406 | Fallon | Prairie |
| 406 | Fishtail | Stillwater |
| 406 | Flaxville | Daniels |
| 406 | Florence | Ravalli |
| 406 | Floweree | Chouteau |
| 406 | Forestgrove | Fergus |
| 406 | Forsyth | Rosebud |
| 406 | Fort Benton | Chouteau |
| 406 | Fort Harrison | Lewis And Clark |
| 406 | Fort Peck | Valley |
| 406 | Fort Shaw | Cascade |
| 406 | Fortine | Lincoln |
| 406 | Frazer | Valley |
| 406 | Frenchtown | Missoula |
| 406 | Froid | Roosevelt |
| 406 | Fromberg | Carbon |
| 406 | Galata | Toole |
| 406 | Gallatin Gateway | Gallatin |
| 406 | Gardiner | Park |
| 406 | Garrison | Powell |
| 406 | Garryowen | Big Horn |
| 406 | Geraldine | Chouteau |
| 406 | Geyser | Judith Basin |
| 406 | Gildford | Hill |
| 406 | Glasgow | Valley |
| 406 | Glen | Beaverhead |
| 406 | Glendive | Dawson |
| 406 | Glentana | Valley |
| 406 | Gold Creek | Powell |
| 406 | Grantsdale | Ravalli |
| 406 | Grass Range | Fergus |
| 406 | Great Falls | Cascade |
| 406 | Greycliff | Sweet Grass |
| 406 | Hall | Granite |
| 406 | Hamilton | Ravalli |
| 406 | Hammond | Carter |
| 406 | Hardin | Big Horn |
| 406 | Harlem | Blaine |
| 406 | Harlowton | Wheatland |
| 406 | Harrison | Madison |
| 406 | Hathaway | Rosebud |
| 406 | Haugan | Mineral |
| 406 | Havre | Hill |
| 406 | Hays | Blaine |
| 406 | Heart Butte | Pondera |
| 406 | Helena | Lewis And Clark |
| 406 | Helmville | Powell |
| 406 | Heron | Sanders |
| 406 | Highwood | Chouteau |
| 406 | Hilger | Fergus |
| 406 | Hingham | Hill |
| 406 | Hinsdale | Valley |
| 406 | Hobson | Judith Basin |
| 406 | Hogeland | Blaine |
| 406 | Homestead | Sheridan |
| 406 | Hot Springs | Sanders |
| 406 | Hungry Horse | Flathead |
| 406 | Huntley | Yellowstone |
| 406 | Huson | Missoula |
| 406 | Hysham | Treasure |
| 406 | Ingomar | Rosebud |
| 406 | Inverness | Hill |
| 406 | Ismay | Custer |
| 406 | Jackson | Beaverhead |
| 406 | Jefferson City | Jefferson |
| 406 | Joliet | Carbon |
| 406 | Joplin | Liberty |
| 406 | Jordan | Garfield |
| 406 | Judith Gap | Wheatland |
| 406 | Kalispell | Flathead |
| 406 | Kevin | Toole |
| 406 | Kila | Flathead |
| 406 | Kinsey | Custer |
| 406 | Kremlin | Hill |
| 406 | Lake Mc Donald | Flathead |
| 406 | Lakeside | Flathead |
| 406 | Lambert | Richland |
| 406 | Lame Deer | Rosebud |
| 406 | Larslan | Valley |
| 406 | Laurel | Yellowstone |
| 406 | Lavina | Golden Valley |
| 406 | Ledger | Pondera |
| 406 | Lewistown | Fergus |
| 406 | Libby | Lincoln |
| 406 | Lima | Beaverhead |
| 406 | Lincoln | Lewis And Clark |
| 406 | Lindsay | Dawson |
| 406 | Livingston | Park |
| 406 | Lloyd | Blaine |
| 406 | Lodge Grass | Big Horn |
| 406 | Lolo | Missoula |
| 406 | Loma | Chouteau |
| 406 | Lonepine | Sanders |
| 406 | Loring | Phillips |
| 406 | Lothair | Liberty |
| 406 | Malmstrom Afb | Cascade |
| 406 | Malta | Phillips |
| 406 | Manhattan | Gallatin |
| 406 | Marion | Flathead |
| 406 | Martin City | Flathead |
| 406 | Martinsdale | Meagher |
| 406 | Marysville | Lewis And Clark |
| 406 | Mc Allister | Madison |
| 406 | Mc Leod | Sweet Grass |
| 406 | Medicine Lake | Sheridan |
| 406 | Melrose | Silver Bow |
| 406 | Melstone | Musselshell |
| 406 | Melville | Sweet Grass |
| 406 | Mildred | Prairie |
| 406 | Miles City | Custer |
| 406 | Milltown | Missoula |
| 406 | Missoula | Missoula |
| 406 | Moccasin | Judith Basin |
| 406 | Molt | Yellowstone |
| 406 | Monarch | Cascade |
| 406 | Moore | Fergus |
| 406 | Mosby | Garfield |
| 406 | Musselshell | Musselshell |
| 406 | Nashua | Valley |
| 406 | Neihart | Cascade |
| 406 | Norris | Madison |
| 406 | Noxon | Sanders |
| 406 | Nye | Stillwater |
| 406 | Oilmont | Toole |
| 406 | Olive | Powder River |
| 406 | Olney | Flathead |
| 406 | Opheim | Valley |
| 406 | Otter | Powder River |
| 406 | Outlook | Sheridan |
| 406 | Ovando | Powell |
| 406 | Pablo | Lake |
| 406 | Paradise | Sanders |
| 406 | Park City | Stillwater |
| 406 | Peerless | Daniels |
| 406 | Pendroy | Teton |
| 406 | Philipsburg | Granite |
| 406 | Pinesdale | Ravalli |
| 406 | Plains | Sanders |
| 406 | Plentywood | Sheridan |
| 406 | Plevna | Fallon |
| 406 | Polaris | Beaverhead |
| 406 | Polebridge | Flathead |
| 406 | Polson | Lake |
| 406 | Pompeys Pillar | Yellowstone |
| 406 | Pony | Madison |
| 406 | Poplar | Roosevelt |
| 406 | Powderville | Powder River |
| 406 | Power | Teton |
| 406 | Pray | Park |
| 406 | Proctor | Lake |
| 406 | Pryor | Big Horn |
| 406 | Radersburg | Broadwater |
| 406 | Ramsay | Silver Bow |
| 406 | Rapelje | Stillwater |
| 406 | Ravalli | Lake |
| 406 | Raymond | Sheridan |
| 406 | Raynesford | Judith Basin |
| 406 | Red Lodge | Carbon |
| 406 | Redstone | Sheridan |
| 406 | Reed Point | Stillwater |
| 406 | Reserve | Sheridan |
| 406 | Rexford | Lincoln |
| 406 | Richey | Dawson |
| 406 | Richland | Valley |
| 406 | Ringling | Meagher |
| 406 | Roberts | Carbon |
| 406 | Rollins | Lake |
| 406 | Ronan | Lake |
| 406 | Roscoe | Carbon |
| 406 | Rosebud | Rosebud |
| 406 | Roundup | Musselshell |
| 406 | Roy | Fergus |
| 406 | Rudyard | Hill |
| 406 | Ryegate | Golden Valley |
| 406 | Saco | Phillips |
| 406 | Saltese | Mineral |
| 406 | Sand Coulee | Cascade |
| 406 | Sand Springs | Garfield |
| 406 | Sanders | Treasure |
| 406 | Savage | Richland |
| 406 | Scobey | Daniels |
| 406 | Seeley Lake | Missoula |
| 406 | Shawmut | Wheatland |
| 406 | Shelby | Toole |
| 406 | Shepherd | Yellowstone |
| 406 | Sheridan | Madison |
| 406 | Sidney | Richland |
| 406 | Silver Gate | Park |
| 406 | Silver Star | Madison |
| 406 | Simms | Cascade |
| 406 | Somers | Flathead |
| 406 | Springdale | Park |
| 406 | St Ignatius | Lake |
| 406 | St Marie | Valley |
| 406 | St Regis | Mineral |
| 406 | St Xavier | Big Horn |
| 406 | Stanford | Judith Basin |
| 406 | Stevensville | Ravalli |
| 406 | Stockett | Cascade |
| 406 | Stryker | Lincoln |
| 406 | Sula | Ravalli |
| 406 | Sumatra | Rosebud |
| 406 | Sun River | Cascade |
| 406 | Sunburst | Toole |
| 406 | Superior | Mineral |
| 406 | Sweet Grass | Toole |
| 406 | Teigen | Petroleum |
| 406 | Terry | Prairie |
| 406 | Thompson Falls | Sanders |
| 406 | Three Forks | Gallatin |
| 406 | Toston | Broadwater |
| 406 | Townsend | Broadwater |
| 406 | Trego | Lincoln |
| 406 | Trout Creek | Sanders |
| 406 | Troy | Lincoln |
| 406 | Turner | Blaine |
| 406 | Twin Bridges | Madison |
| 406 | Two Dot | Wheatland |
| 406 | Ulm | Cascade |
| 406 | Valier | Pondera |
| 406 | Vandalia | Valley |
| 406 | Vaughn | Cascade |
| 406 | Victor | Ravalli |
| 406 | Vida | McCone |
| 406 | Virginia City | Madison |
| 406 | Volborg | Custer |
| 406 | Warm Springs | Deer Lodge |
| 406 | West Glacier | Flathead |
| 406 | West Yellowstone | Gallatin |
| 406 | Westby | Sheridan |
| 406 | White Sulphur Springs | Meagher |
| 406 | Whitefish | Flathead |
| 406 | Whitehall | Jefferson |
| 406 | Whitetail | Daniels |
| 406 | Whitewater | Phillips |
| 406 | Whitlash | Liberty |
| 406 | Wibaux | Wibaux |
| 406 | Willard | Fallon |
| 406 | Willow Creek | Gallatin |
| 406 | Wilsall | Park |
| 406 | Winifred | Fergus |
| 406 | Winnett | Petroleum |
| 406 | Winston | Broadwater |
| 406 | Wisdom | Beaverhead |
| 406 | Wise River | Beaverhead |
| 406 | Wolf Creek | Lewis And Clark |
| 406 | Wolf Point | Roosevelt |
| 406 | Worden | Yellowstone |
| 406 | Wyola | Big Horn |
| 406 | Yellowtail | Big Horn |
| 406 | Zortman | Phillips |
| 406 | Zurich | Blaine |