To faciltiate users, the United States of America is divided into regions known as Area Codes, corresponding to particular geographic telephone dialing areas.
An area code denotes the regional location of a phone number within the United States.
The Area Code table below shows an area codes each.
Area Code 406 listing, by city
@The cities listed with each area code are the major cities for that area code;
| City / State | Area code | Zip Code | County | Iso | |
|---|---|---|---|---|---|
| Absarokee (Montana) | 406 | 59001 | Stillwater | US-MT | |
| Acton (Montana) | 406 | 59002 | Yellowstone | US-MT | |
| Alberton (Montana) | 406 | 59820 | Mineral | US-MT | |
| Alder (Montana) | 406 | 59710 | Madison | US-MT | |
| Alzada (Montana) | 406 | 59311 | Carter | US-MT | |
| Anaconda (Montana) | 406 | 59711 | Deer Lodge | US-MT | |
| Angela (Montana) | 406 | 59312 | Garfield | US-MT | |
| Antelope (Montana) | 406 | 59211 | Sheridan | US-MT | |
| Arlee (Montana) | 406 | 59821 | Lake | US-MT | |
| Ashland (Montana) | 406 | 59003 | Rosebud | US-MT | |
| Ashland (Montana) | 406 | 59004 | Rosebud | US-MT | |
| Augusta (Montana) | 406 | 59410 | Lewis and Clark | US-MT | |
| Avon (Montana) | 406 | 59713 | Powell | US-MT | |
| Babb (Montana) | 406 | 59411 | Glacier | US-MT | |
| Bainville (Montana) | 406 | 59212 | Roosevelt | US-MT | |
| Baker (Montana) | 406 | 59313 | Fallon | US-MT | |
| Ballantine (Montana) | 406 | 59006 | Yellowstone | US-MT | |
| Basin (Montana) | 406 | 59631 | Jefferson | US-MT | |
| Bearcreek (Montana) | 406 | 59007 | Carbon | US-MT | |
| Belfry (Montana) | 406 | 59008 | Carbon | US-MT | |
| Belgrade (Montana) | 406 | 59714 | Gallatin | US-MT | |
| Belt (Montana) | 406 | 59412 | Cascade | US-MT | |
| Biddle (Montana) | 406 | 59314 | Powder River | US-MT | |
| Big Arm (Montana) | 406 | 59910 | Lake | US-MT | |
| Big Sandy (Montana) | 406 | 59520 | Chouteau | US-MT | |
| Big Sky (Montana) | 406 | 59716 | Gallatin | US-MT | |
| Big Timber (Montana) | 406 | 59011 | Sweet Grass | US-MT | |
| Bigfork (Montana) | 406 | 59911 | Flathead | US-MT | |
| Bighorn (Montana) | 406 | 59010 | Treasure | US-MT | |
| Billings (Montana) | 406 | 59101 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59102 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59103 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59104 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59105 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59106 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59107 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59108 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59111 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59112 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59114 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59115 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59116 | Yellowstone | US-MT | |
| Billings (Montana) | 406 | 59117 | Yellowstone | US-MT | |
| Birney (Montana) | 406 | 59012 | Rosebud | US-MT | |
| Black Eagle (Montana) | 406 | 59414 | Cascade | US-MT | |
| Bloomfield (Montana) | 406 | 59315 | Dawson | US-MT | |
| Bonner (Montana) | 406 | 59823 | Missoula | US-MT | |
| Boulder (Montana) | 406 | 59632 | Jefferson | US-MT | |
| Box Elder (Montana) | 406 | 59521 | Hill | US-MT | |
| Boyd (Montana) | 406 | 59013 | Carbon | US-MT | |
| Boyes (Montana) | 406 | 59316 | Carter | US-MT | |
| Bozeman (Montana) | 406 | 59715 | Gallatin | US-MT | |
| Bozeman (Montana) | 406 | 59717 | Gallatin | US-MT | |
| Bozeman (Montana) | 406 | 59718 | Gallatin | US-MT | |
| Bozeman (Montana) | 406 | 59719 | Gallatin | US-MT | |
| Bozeman (Montana) | 406 | 59771 | Gallatin | US-MT | |
| Bozeman (Montana) | 406 | 59772 | Gallatin | US-MT | |
| Bozeman (Montana) | 406 | 59773 | Gallatin | US-MT | |
| Brady (Montana) | 406 | 59416 | Pondera | US-MT | |
| Bridger (Montana) | 406 | 59014 | Carbon | US-MT | |
| Broadus (Montana) | 406 | 59317 | Powder River | US-MT | |
| Broadview (Montana) | 406 | 59015 | Yellowstone | US-MT | |
| Brockton (Montana) | 406 | 59213 | Richland | US-MT | |
| Brockway (Montana) | 406 | 59214 | McCone | US-MT | |
| Browning (Montana) | 406 | 59417 | Glacier | US-MT | |
| Brusett (Montana) | 406 | 59318 | Garfield | US-MT | |
| Buffalo (Montana) | 406 | 59418 | Judith Basin | US-MT | |
| Busby (Montana) | 406 | 59016 | Big Horn | US-MT | |
| Butte (Montana) | 406 | 59701 | Silver Bow | US-MT | |
| Butte (Montana) | 406 | 59702 | Silver Bow | US-MT | |
| Butte (Montana) | 406 | 59703 | Silver Bow | US-MT | |
| Butte (Montana) | 406 | 59707 | Silver Bow | US-MT | |
| Butte (Montana) | 406 | 59750 | Silver Bow | US-MT | |
| Bynum (Montana) | 406 | 59419 | Teton | US-MT | |
| Cameron (Montana) | 406 | 59720 | Madison | US-MT | |
| Canyon Creek (Montana) | 406 | 59633 | Lewis and Clark | US-MT | |
| Capitol (Montana) | 406 | 59319 | Carter | US-MT | |
| Cardwell (Montana) | 406 | 59721 | Madison | US-MT | |
| Carter (Montana) | 406 | 59420 | Chouteau | US-MT | |
| Cascade (Montana) | 406 | 59421 | Cascade | US-MT | |
| Charlo (Montana) | 406 | 59824 | Lake | US-MT | |
| Chester (Montana) | 406 | 59522 | Liberty | US-MT | |
| Chinook (Montana) | 406 | 59523 | Blaine | US-MT | |
| Choteau (Montana) | 406 | 59422 | Teton | US-MT | |
| Circle (Montana) | 406 | 59215 | McCone | US-MT | |
| Clancy (Montana) | 406 | 59634 | Jefferson | US-MT | |
| Clinton (Montana) | 406 | 59825 | Missoula | US-MT | |
| Clyde Park (Montana) | 406 | 59018 | Park | US-MT | |
| Coffee Creek (Montana) | 406 | 59424 | Fergus | US-MT | |
| Cohagen (Montana) | 406 | 59322 | Garfield | US-MT | |
| Colstrip (Montana) | 406 | 59323 | Rosebud | US-MT | |
| Columbia Falls (Montana) | 406 | 59912 | Flathead | US-MT | |
| Columbus (Montana) | 406 | 59019 | Stillwater | US-MT | |
| Condon (Montana) | 406 | 59826 | Missoula | US-MT | |
| Conner (Montana) | 406 | 59827 | Ravalli | US-MT | |
| Conrad (Montana) | 406 | 59425 | Pondera | US-MT | |
| Cooke City (Montana) | 406 | 59020 | Park | US-MT | |
| Coram (Montana) | 406 | 59913 | Flathead | US-MT | |
| Corvallis (Montana) | 406 | 59828 | Ravalli | US-MT | |
| Crane (Montana) | 406 | 59217 | Richland | US-MT | |
| Crow Agency (Montana) | 406 | 59022 | Big Horn | US-MT | |
| Culbertson (Montana) | 406 | 59218 | Roosevelt | US-MT | |
| Custer (Montana) | 406 | 59024 | Yellowstone | US-MT | |
| Cut Bank (Montana) | 406 | 59427 | Glacier | US-MT | |
| Dagmar (Montana) | 406 | 59219 | Sheridan | US-MT | |
| Darby (Montana) | 406 | 59829 | Ravalli | US-MT | |
| Dayton (Montana) | 406 | 59914 | Lake | US-MT | |
| De Borgia (Montana) | 406 | 59830 | Mineral | US-MT | |
| Decker (Montana) | 406 | 59025 | Big Horn | US-MT | |
| Deer Lodge (Montana) | 406 | 59722 | Powell | US-MT | |
| Dell (Montana) | 406 | 59724 | Beaverhead | US-MT | |
| Denton (Montana) | 406 | 59430 | Fergus | US-MT | |
| Dillon (Montana) | 406 | 59725 | Beaverhead | US-MT | |
| Divide (Montana) | 406 | 59727 | Silver Bow | US-MT | |
| Dixon (Montana) | 406 | 59831 | Sanders | US-MT | |
| Dodson (Montana) | 406 | 59524 | Phillips | US-MT | |
| Drummond (Montana) | 406 | 59832 | Granite | US-MT | |
| Dupuyer (Montana) | 406 | 59432 | Pondera | US-MT | |
| Dutton (Montana) | 406 | 59433 | Teton | US-MT | |
| East Glacier Park (Montana) | 406 | 59434 | Glacier | US-MT | |
| East Helena (Montana) | 406 | 59635 | Lewis and Clark | US-MT | |
| Edgar (Montana) | 406 | 59026 | Carbon | US-MT | |
| Ekalaka (Montana) | 406 | 59324 | Carter | US-MT | |
| Elliston (Montana) | 406 | 59728 | Powell | US-MT | |
| Elmo (Montana) | 406 | 59915 | Lake | US-MT | |
| Emigrant (Montana) | 406 | 59027 | Park | US-MT | |
| Ennis (Montana) | 406 | 59729 | Madison | US-MT | |
| Essex (Montana) | 406 | 59916 | Flathead | US-MT | |
| Ethridge (Montana) | 406 | 59435 | Toole | US-MT | |
| Eureka (Montana) | 406 | 59917 | Lincoln | US-MT | |
| Fairfield (Montana) | 406 | 59436 | Teton | US-MT | |
| Fairview (Montana) | 406 | 59221 | Richland | US-MT | |
| Fallon (Montana) | 406 | 59326 | Prairie | US-MT | |
| Fishtail (Montana) | 406 | 59028 | Stillwater | US-MT | |
| Flaxville (Montana) | 406 | 59222 | Daniels | US-MT | |
| Florence (Montana) | 406 | 59833 | Ravalli | US-MT | |
| Floweree (Montana) | 406 | 59440 | Chouteau | US-MT | |
| Forest Grove (Montana) | 406 | 59441 | Fergus | US-MT | |
| Forsyth (Montana) | 406 | 59327 | Rosebud | US-MT | |
| Fort Benton (Montana) | 406 | 59442 | Chouteau | US-MT | |
| Fort Harrison (Montana) | 406 | 59636 | Lewis and Clark | US-MT | |
| Fort Peck (Montana) | 406 | 59223 | Valley | US-MT | |
| Fort Shaw (Montana) | 406 | 59443 | Cascade | US-MT | |
| Fort Smith (Montana) | 406 | 59035 | Big Horn | US-MT | |
| Fortine (Montana) | 406 | 59918 | Lincoln | US-MT | |
| Frazer (Montana) | 406 | 59225 | Valley | US-MT | |
| Frenchtown (Montana) | 406 | 59834 | Missoula | US-MT | |
| Froid (Montana) | 406 | 59226 | Roosevelt | US-MT | |
| Fromberg (Montana) | 406 | 59029 | Carbon | US-MT | |
| Galata (Montana) | 406 | 59444 | Liberty | US-MT | |
| Gallatin Gateway (Montana) | 406 | 59730 | Gallatin | US-MT | |
| Gardiner (Montana) | 406 | 59030 | Park | US-MT | |
| Garrison (Montana) | 406 | 59731 | Powell | US-MT | |
| Garryowen (Montana) | 406 | 59031 | Big Horn | US-MT | |
| Geraldine (Montana) | 406 | 59446 | Chouteau | US-MT | |
| Geyser (Montana) | 406 | 59447 | Judith Basin | US-MT | |
| Gildford (Montana) | 406 | 59525 | Hill | US-MT | |
| Glasgow (Montana) | 406 | 59230 | Valley | US-MT | |
| Glen (Montana) | 406 | 59732 | Beaverhead | US-MT | |
| Glendive (Montana) | 406 | 59330 | Dawson | US-MT | |
| Glentana (Montana) | 406 | 59240 | Valley | US-MT | |
| Gold Creek (Montana) | 406 | 59733 | Powell | US-MT | |
| Grantsdale (Montana) | 406 | 59835 | Ravalli | US-MT | |
| Grass Range (Montana) | 406 | 59032 | Fergus | US-MT | |
| Great Falls (Montana) | 406 | 59401 | Cascade | US-MT | |
| Great Falls (Montana) | 406 | 59403 | Cascade | US-MT | |
| Great Falls (Montana) | 406 | 59404 | Cascade | US-MT | |
| Great Falls (Montana) | 406 | 59405 | Cascade | US-MT | |
| Great Falls (Montana) | 406 | 59406 | Cascade | US-MT | |
| Greycliff (Montana) | 406 | 59033 | Sweet Grass | US-MT | |
| Hall (Montana) | 406 | 59837 | Granite | US-MT | |
| Hamilton (Montana) | 406 | 59840 | Ravalli | US-MT | |
| Hammond (Montana) | 406 | 59332 | Carter | US-MT | |
| Hardin (Montana) | 406 | 59034 | Big Horn | US-MT | |
| Harlem (Montana) | 406 | 59526 | Blaine | US-MT | |
| Harlowton (Montana) | 406 | 59036 | Wheatland | US-MT | |
| Harrison (Montana) | 406 | 59735 | Madison | US-MT | |
| Hathaway (Montana) | 406 | 59333 | Rosebud | US-MT | |
| Haugan (Montana) | 406 | 59842 | Mineral | US-MT | |
| Havre (Montana) | 406 | 59501 | Hill | US-MT | |
| Hays (Montana) | 406 | 59527 | Blaine | US-MT | |
| Heart Butte (Montana) | 406 | 59448 | Pondera | US-MT | |
| Helena (Montana) | 406 | 59601 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59602 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59604 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59620 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59623 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59624 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59625 | Lewis and Clark | US-MT | |
| Helena (Montana) | 406 | 59626 | Lewis and Clark | US-MT | |
| Helmville (Montana) | 406 | 59843 | Powell | US-MT | |
| Heron (Montana) | 406 | 59844 | Sanders | US-MT | |
| Highwood (Montana) | 406 | 59450 | Chouteau | US-MT | |
| Hilger (Montana) | 406 | 59451 | Fergus | US-MT | |
| Hingham (Montana) | 406 | 59528 | Hill | US-MT | |
| Hinsdale (Montana) | 406 | 59241 | Valley | US-MT | |
| Hobson (Montana) | 406 | 59452 | Judith Basin | US-MT | |
| Hogeland (Montana) | 406 | 59529 | Blaine | US-MT | |
| Homestead (Montana) | 406 | 59242 | Sheridan | US-MT | |
| Hot Springs (Montana) | 406 | 59845 | Flathead | US-MT | |
| Hungry Horse (Montana) | 406 | 59919 | Flathead | US-MT | |
| Huntley (Montana) | 406 | 59037 | Yellowstone | US-MT | |
| Huson (Montana) | 406 | 59846 | Missoula | US-MT | |
| Hysham (Montana) | 406 | 59038 | Treasure | US-MT | |
| Ingomar (Montana) | 406 | 59039 | Rosebud | US-MT | |
| Inverness (Montana) | 406 | 59530 | Hill | US-MT | |
| Ismay (Montana) | 406 | 59336 | Custer | US-MT | |
| Jackson (Montana) | 406 | 59736 | Beaverhead | US-MT | |
| Jefferson City (Montana) | 406 | 59638 | Jefferson | US-MT | |
| Joliet (Montana) | 406 | 59041 | Carbon | US-MT | |
| Joplin (Montana) | 406 | 59531 | Liberty | US-MT | |
| Jordan (Montana) | 406 | 59337 | Garfield | US-MT | |
| Judith Gap (Montana) | 406 | 59453 | Wheatland | US-MT | |
| Kalispell (Montana) | 406 | 59901 | Flathead | US-MT | |
| Kalispell (Montana) | 406 | 59903 | Flathead | US-MT | |
| Kalispell (Montana) | 406 | 59904 | Flathead | US-MT | |
| Kevin (Montana) | 406 | 59454 | Toole | US-MT | |
| Kila (Montana) | 406 | 59920 | Flathead | US-MT | |
| Kinsey (Montana) | 406 | 59338 | Custer | US-MT | |
| Kremlin (Montana) | 406 | 59532 | Hill | US-MT | |
| Lake Mc Donald (Montana) | 406 | 59921 | Flathead | US-MT | |
| Lakeside (Montana) | 406 | 59922 | Flathead | US-MT | |
| Lambert (Montana) | 406 | 59243 | Richland | US-MT | |
| Lame Deer (Montana) | 406 | 59043 | Rosebud | US-MT | |
| Larslan (Montana) | 406 | 59244 | Valley | US-MT | |
| Laurel (Montana) | 406 | 59044 | Yellowstone | US-MT | |
| Lavina (Montana) | 406 | 59046 | Golden Valley | US-MT | |
| Ledger (Montana) | 406 | 59456 | Toole | US-MT | |
| Lewistown (Montana) | 406 | 59457 | Fergus | US-MT | |
| Libby (Montana) | 406 | 59923 | Lincoln | US-MT | |
| Lima (Montana) | 406 | 59739 | Beaverhead | US-MT | |
| Lincoln (Montana) | 406 | 59639 | Lewis and Clark | US-MT | |
| Lindsay (Montana) | 406 | 59339 | Dawson | US-MT | |
| Livingston (Montana) | 406 | 59047 | Park | US-MT | |
| Lloyd (Montana) | 406 | 59535 | Blaine | US-MT | |
| Lodge Grass (Montana) | 406 | 59050 | Big Horn | US-MT | |
| Lolo (Montana) | 406 | 59847 | Missoula | US-MT | |
| Loma (Montana) | 406 | 59460 | Chouteau | US-MT | |
| Lonepine (Montana) | 406 | 59848 | Sanders | US-MT | |
| Loring (Montana) | 406 | 59537 | Phillips | US-MT | |
| Lothair (Montana) | 406 | 59461 | Liberty | US-MT | |
| Malmstrom A F B (Montana) | 406 | 59402 | Cascade | US-MT | |
| Malta (Montana) | 406 | 59538 | Phillips | US-MT | |
| Manhattan (Montana) | 406 | 59741 | Gallatin | US-MT | |
| Marion (Montana) | 406 | 59925 | Flathead | US-MT | |
| Martin City (Montana) | 406 | 59926 | Flathead | US-MT | |
| Martinsdale (Montana) | 406 | 59053 | Meagher | US-MT | |
| Marysville (Montana) | 406 | 59640 | Lewis and Clark | US-MT | |
| Mc Allister (Montana) | 406 | 59740 | Madison | US-MT | |
| Mc Leod (Montana) | 406 | 59052 | Sweet Grass | US-MT | |
| Medicine Lake (Montana) | 406 | 59247 | Sheridan | US-MT | |
| Melrose (Montana) | 406 | 59743 | Silver Bow | US-MT | |
| Melstone (Montana) | 406 | 59054 | Musselshell | US-MT | |
| Melville (Montana) | 406 | 59055 | Sweet Grass | US-MT | |
| Mildred (Montana) | 406 | 59341 | Prairie | US-MT | |
| Miles City (Montana) | 406 | 59301 | Custer | US-MT | |
| Milltown (Montana) | 406 | 59851 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59801 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59802 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59803 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59804 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59806 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59807 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59808 | Missoula | US-MT | |
| Missoula (Montana) | 406 | 59812 | Missoula | US-MT | |
| Moccasin (Montana) | 406 | 59462 | Judith Basin | US-MT | |
| Molt (Montana) | 406 | 59057 | Yellowstone | US-MT | |
| Monarch (Montana) | 406 | 59463 | Cascade | US-MT | |
| Moore (Montana) | 406 | 59464 | Fergus | US-MT | |
| Mosby (Montana) | 406 | 59058 | Garfield | US-MT | |
| Musselshell (Montana) | 406 | 59059 | Musselshell | US-MT | |
| Nashua (Montana) | 406 | 59248 | Valley | US-MT | |
| Neihart (Montana) | 406 | 59465 | Cascade | US-MT | |
| Norris (Montana) | 406 | 59745 | Madison | US-MT | |
| Noxon (Montana) | 406 | 59853 | Sanders | US-MT | |
| Nye (Montana) | 406 | 59061 | Stillwater | US-MT | |
| Oilmont (Montana) | 406 | 59466 | Toole | US-MT | |
| Olive (Montana) | 406 | 59343 | Powder River | US-MT | |
| Olney (Montana) | 406 | 59927 | Flathead | US-MT | |
| Opheim (Montana) | 406 | 59250 | Valley | US-MT | |
| Otter (Montana) | 406 | 59062 | Powder River | US-MT | |
| Outlook (Montana) | 406 | 59252 | Sheridan | US-MT | |
| Ovando (Montana) | 406 | 59854 | Powell | US-MT | |
| Pablo (Montana) | 406 | 59855 | Lake | US-MT | |
| Paradise (Montana) | 406 | 59856 | Sanders | US-MT | |
| Park City (Montana) | 406 | 59063 | Stillwater | US-MT | |
| Peerless (Montana) | 406 | 59253 | Daniels | US-MT | |
| Pendroy (Montana) | 406 | 59467 | Teton | US-MT | |
| Philipsburg (Montana) | 406 | 59858 | Granite | US-MT | |
| Pinesdale (Montana) | 406 | 59841 | Ravalli | US-MT | |
| Plains (Montana) | 406 | 59859 | Sanders | US-MT | |
| Plentywood (Montana) | 406 | 59254 | Sheridan | US-MT | |
| Plevna (Montana) | 406 | 59344 | Fallon | US-MT | |
| Polaris (Montana) | 406 | 59746 | Beaverhead | US-MT | |
| Polebridge (Montana) | 406 | 59928 | Flathead | US-MT | |
| Polson (Montana) | 406 | 59860 | Lake | US-MT | |
| Pompeys Pillar (Montana) | 406 | 59064 | Yellowstone | US-MT | |
| Pony (Montana) | 406 | 59747 | Madison | US-MT | |
| Poplar (Montana) | 406 | 59255 | Richland | US-MT | |
| Powderville (Montana) | 406 | 59345 | Powder River | US-MT | |
| Power (Montana) | 406 | 59468 | Teton | US-MT | |
| Pray (Montana) | 406 | 59065 | Park | US-MT | |
| Proctor (Montana) | 406 | 59929 | Lake | US-MT | |
| Pryor (Montana) | 406 | 59066 | Big Horn | US-MT | |
| Radersburg (Montana) | 406 | 59641 | Broadwater | US-MT | |
| Ramsay (Montana) | 406 | 59748 | Silver Bow | US-MT | |
| Rapelje (Montana) | 406 | 59067 | Stillwater | US-MT | |
| Ravalli (Montana) | 406 | 59863 | Lake | US-MT | |
| Raymond (Montana) | 406 | 59256 | Sheridan | US-MT | |
| Raynesford (Montana) | 406 | 59469 | Judith Basin | US-MT | |
| Red Lodge (Montana) | 406 | 59068 | Carbon | US-MT | |
| Redstone (Montana) | 406 | 59257 | Sheridan | US-MT | |
| Reed Point (Montana) | 406 | 59069 | Stillwater | US-MT | |
| Reserve (Montana) | 406 | 59258 | Sheridan | US-MT | |
| Rexford (Montana) | 406 | 59930 | Lincoln | US-MT | |
| Richey (Montana) | 406 | 59259 | Dawson | US-MT | |
| Richland (Montana) | 406 | 59260 | Valley | US-MT | |
| Ringling (Montana) | 406 | 59642 | Meagher | US-MT | |
| Roberts (Montana) | 406 | 59070 | Carbon | US-MT | |
| Rollins (Montana) | 406 | 59931 | Lake | US-MT | |
| Ronan (Montana) | 406 | 59864 | Lake | US-MT | |
| Roscoe (Montana) | 406 | 59071 | Carbon | US-MT | |
| Rosebud (Montana) | 406 | 59347 | Rosebud | US-MT | |
| Roundup (Montana) | 406 | 59072 | Musselshell | US-MT | |
| Roundup (Montana) | 406 | 59073 | Musselshell | US-MT | |
| Roy (Montana) | 406 | 59471 | Fergus | US-MT | |
| Rudyard (Montana) | 406 | 59540 | Hill | US-MT | |
| Ryegate (Montana) | 406 | 59074 | Golden Valley | US-MT | |
| Saco (Montana) | 406 | 59261 | Phillips | US-MT | |
| Saint Ignatius (Montana) | 406 | 59865 | Lake | US-MT | |
| Saint Marie (Montana) | 406 | 59231 | Valley | US-MT | |
| Saint Regis (Montana) | 406 | 59866 | Mineral | US-MT | |
| Saint Xavier (Montana) | 406 | 59075 | Big Horn | US-MT | |
| Saltese (Montana) | 406 | 59867 | Mineral | US-MT | |
| Sand Coulee (Montana) | 406 | 59472 | Cascade | US-MT | |
| Sand Springs (Montana) | 406 | 59077 | Garfield | US-MT | |
| Sanders (Montana) | 406 | 59076 | Treasure | US-MT | |
| Savage (Montana) | 406 | 59262 | Richland | US-MT | |
| Scobey (Montana) | 406 | 59263 | Daniels | US-MT | |
| Seeley Lake (Montana) | 406 | 59868 | Missoula | US-MT | |
| Shawmut (Montana) | 406 | 59078 | Wheatland | US-MT | |
| Shelby (Montana) | 406 | 59474 | Toole | US-MT | |
| Shepherd (Montana) | 406 | 59079 | Yellowstone | US-MT | |
| Sheridan (Montana) | 406 | 59749 | Madison | US-MT | |
| Sidney (Montana) | 406 | 59270 | Richland | US-MT | |
| Silver Gate (Montana) | 406 | 59081 | Park | US-MT | |
| Silver Star (Montana) | 406 | 59751 | Madison | US-MT | |
| Simms (Montana) | 406 | 59477 | Cascade | US-MT | |
| Somers (Montana) | 406 | 59932 | Flathead | US-MT | |
| Springdale (Montana) | 406 | 59082 | Park | US-MT | |
| Stanford (Montana) | 406 | 59479 | Judith Basin | US-MT | |
| Stevensville (Montana) | 406 | 59870 | Ravalli | US-MT | |
| Stockett (Montana) | 406 | 59480 | Cascade | US-MT | |
| Stryker (Montana) | 406 | 59933 | Lincoln | US-MT | |
| Sula (Montana) | 406 | 59871 | Ravalli | US-MT | |
| Sumatra (Montana) | 406 | 59083 | Rosebud | US-MT | |
| Sun River (Montana) | 406 | 59483 | Cascade | US-MT | |
| Sunburst (Montana) | 406 | 59482 | Toole | US-MT | |
| Superior (Montana) | 406 | 59872 | Mineral | US-MT | |
| Sweet Grass (Montana) | 406 | 59484 | Toole | US-MT | |
| Teigen (Montana) | 406 | 59084 | Petroleum | US-MT | |
| Terry (Montana) | 406 | 59349 | Prairie | US-MT | |
| Thompson Falls (Montana) | 406 | 59873 | Sanders | US-MT | |
| Three Forks (Montana) | 406 | 59752 | Gallatin | US-MT | |
| Toston (Montana) | 406 | 59643 | Broadwater | US-MT | |
| Townsend (Montana) | 406 | 59644 | Broadwater | US-MT | |
| Trego (Montana) | 406 | 59934 | Lincoln | US-MT | |
| Trout Creek (Montana) | 406 | 59874 | Sanders | US-MT | |
| Troy (Montana) | 406 | 59935 | Lincoln | US-MT | |
| Turner (Montana) | 406 | 59542 | Blaine | US-MT | |
| Twin Bridges (Montana) | 406 | 59754 | Madison | US-MT | |
| Two Dot (Montana) | 406 | 59085 | Wheatland | US-MT | |
| Ulm (Montana) | 406 | 59485 | Cascade | US-MT | |
| Valier (Montana) | 406 | 59486 | Pondera | US-MT | |
| Vandalia (Montana) | 406 | 59273 | Valley | US-MT | |
| Vaughn (Montana) | 406 | 59487 | Cascade | US-MT | |
| Victor (Montana) | 406 | 59875 | Ravalli | US-MT | |
| Vida (Montana) | 406 | 59274 | McCone | US-MT | |
| Virginia City (Montana) | 406 | 59755 | Madison | US-MT | |
| Volborg (Montana) | 406 | 59351 | Powder River | US-MT | |
| Warm Springs (Montana) | 406 | 59756 | Deer Lodge | US-MT | |
| West Glacier (Montana) | 406 | 59936 | Flathead | US-MT | |
| West Yellowstone (Montana) | 406 | 59758 | Gallatin | US-MT | |
| Westby (Montana) | 406 | 59275 | Sheridan | US-MT | |
| White Sulphur Springs (Montana) | 406 | 59645 | Meagher | US-MT | |
| Whitefish (Montana) | 406 | 59937 | Flathead | US-MT | |
| Whitehall (Montana) | 406 | 59759 | Jefferson | US-MT | |
| Whitetail (Montana) | 406 | 59276 | Daniels | US-MT | |
| Whitewater (Montana) | 406 | 59544 | Phillips | US-MT | |
| Whitlash (Montana) | 406 | 59545 | Liberty | US-MT | |
| Wibaux (Montana) | 406 | 59353 | Wibaux | US-MT | |
| Willard (Montana) | 406 | 59354 | Fallon | US-MT | |
| Willow Creek (Montana) | 406 | 59760 | Gallatin | US-MT | |
| Wilsall (Montana) | 406 | 59086 | Park | US-MT | |
| Winifred (Montana) | 406 | 59489 | Fergus | US-MT | |
| Winnett (Montana) | 406 | 59087 | Petroleum | US-MT | |
| Winston (Montana) | 406 | 59647 | Broadwater | US-MT | |
| Wisdom (Montana) | 406 | 59761 | Beaverhead | US-MT | |
| Wise River (Montana) | 406 | 59762 | Beaverhead | US-MT | |
| Wolf Creek (Montana) | 406 | 59648 | Lewis and Clark | US-MT | |
| Wolf Point (Montana) | 406 | 59201 | McCone | US-MT | |
| Worden (Montana) | 406 | 59088 | Yellowstone | US-MT | |
| Wyola (Montana) | 406 | 59089 | Big Horn | US-MT | |
| Zortman (Montana) | 406 | 59546 | Phillips | US-MT | |
| Zurich (Montana) | 406 | 59547 | Blaine | US-MT |