Area Code 406

Area code 406 serves the state of Montana. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 406 is a General Purpose Code. Dialing pattern for local calls within the same NPA (area code) is 7D.

Active Prefixes in Area Code 406

Prefix Primary City
406-200 Billings
406-201 Rosebud
406-202 Helena
406-203 Missoula
406-204 Helena
406-205 Great Falls
406-206 Billings
406-207 Missoula
406-208 Billings
406-209 Bozeman
406-210 Seeley Lake
406-212 Kalispell
406-213 Forsyth
406-214 Missoula
406-215 Missoula
406-216 Great Falls
406-217 Great Falls
406-218 Missoula
406-219 Bozeman
406-220 Livingston
406-221 Butte
406-222 Livingston
406-223 Livingston
406-224 Livingston
406-225 Boulder
406-226 Essex
406-227 Helena
406-228 Glasgow
406-229 Livingston
406-230 Glasgow
406-231 Great Falls
406-232 Miles City
406-233 Miles City
406-234 Miles City
406-235 Wolf Creek
406-236 Neihart
406-237 Billings
406-238 Billings
406-239 Missoula
406-240 Missoula
406-241 Missoula
406-242 Thompson Falls
406-243 Missoula
406-244 Montana
406-245 Billings
406-246 Dixon
406-247 Billings
406-248 Billings
406-249 Kalispell
406-250 Kalispell
406-251 Missoula
406-252 Billings
406-253 Kalispell
406-254 Billings
406-255 Billings
406-256 Billings
406-257 Kalispell
406-258 Missoula
406-259 Billings
406-260 Kalispell
406-261 Kalispell
406-262 Montana
406-263 Glasgow
406-264 Fort Shaw
406-265 Montana
406-266 Townsend
406-267 Divide
406-268 Great Falls
406-269 Montana
406-270 Kalispell
406-271 Conrad
406-272 Billings
406-273 Lolo
406-274 Missoula
406-275 Polson
406-276 Lima
406-277 Belt
406-278 Conrad
406-279 Valier
406-280 Montana
406-281 Billings
406-282 Manhattan
406-283 Libby
406-284 Manhattan
406-285 Three Forks
406-286 Medicine Lake
406-287 Whitehall
406-288 Drummond
406-289 Conrad
406-290 Columbus
406-291 Libby
406-292 Joplin
406-293 Libby
406-294 Billings
406-295 Troy
406-296 Eureka
406-297 Montana
406-298 Columbus
406-299 Butte
406-300 Kalispell
406-301 Malta
406-302 Canyon Creek
406-303 Missoula
406-305 White Sulphur Springs
406-309 Kalispell
406-310 Butte
406-312 Bozeman
406-313 Boulder
406-314 Kalispell
406-315 Great Falls
406-317 Missoula
406-318 Polson
406-319 Polson
406-320 Roundup
406-321 Columbus
406-322 Columbus
406-323 Roundup
406-324 Helena
406-325 Billings
406-326 Reed Point
406-327 Missoula
406-328 Absarokee
406-329 Missoula
406-330 Clinton
406-331 Roundup
406-332 Polson
406-333 Livingston
406-334 Libby
406-335 Sweet Grass
406-336 Montana
406-337 Montana
406-338 Browning
406-339 Shelby
406-340 Lima
406-342 Hysham
406-343 Wyola
406-345 Glendive
406-346 Forsyth
406-347 Rosebud
406-348 Huntley
406-349 Montana
406-350 Lewistown
406-351 Forsyth
406-352 Box Elder
406-353 Harlem
406-354 Montana
406-355 Rudyard
406-356 Forsyth
406-357 Lloyd
406-358 Musselshell
406-359 Glendive
406-360 Hamilton
406-361 Hamilton
406-362 Lincoln
406-363 Hamilton
406-364 Hinsdale
406-365 Glendive
406-366 Lewistown
406-367 Montana
406-368 Canyon Creek
406-369 Hamilton
406-370 Missoula
406-371 Billings
406-372 Kremlin
406-373 Billings
406-374 Moore
406-375 Hamilton
406-376 Gildford
406-377 Glendive
406-378 Big Sandy
406-379 Turner
406-380 Lewistown
406-381 Hamilton
406-382 Superior
406-383 Dodson
406-384 Billings
406-385 Westby
406-386 Montana
406-387 Columbia Falls
406-388 Belgrade
406-389 Helena
406-390 Montana
406-391 Cut Bank
406-392 Montana
406-393 Somers
406-394 Montana
406-395 Montana
406-396 Missoula
406-397 Hingham
406-398 Montana
406-399 Montana
406-403 Great Falls
406-404 Bozeman
406-407 Kalispell
406-410 Helena
406-413 Billings
406-414 Bozeman
406-415 Deer Lodge
406-417 Helena
406-420 Bigfork
406-421 Montana
406-422 Helena
406-423 Hobson
406-424 Great Falls
406-425 Red Lodge
406-426 Red Lodge
406-427 Montana
406-428 Forest Grove
406-429 Winnett
406-430 Helena
406-431 Helena
406-432 Montana
406-433 Sidney
406-434 Shelby
406-435 Billings
406-436 Broadus
406-437 Helena
406-438 Helena
406-439 Helena
406-440 Helena
406-441 Helena
406-442 Helena
406-443 Helena
406-444 Helena
406-445 Roberts
406-446 Red Lodge
406-447 Helena
406-448 Montana
406-449 Helena
406-450 Shelby
406-451 Bozeman
406-452 Great Falls
406-453 Great Falls
406-454 Great Falls
406-455 Great Falls
406-456 Montana
406-457 Helena
406-458 Helena
406-459 Helena
406-460 Shelby
406-461 Helena
406-462 Winifred
406-463 Power
406-464 Roy
406-465 Helena
406-466 Choteau
406-467 Fairfield
406-468 Cascade
406-469 Pendroy
406-470 Shelby
406-471 Kalispell
406-472 Pendroy
406-473 Judith Gap
406-474 Flaxville
406-475 Helena
406-476 Dutton
406-477 Ashland
406-478 Sidney
406-479 Butte
406-480 Sidney
406-482 Sidney
406-483 Dagmar
406-484 Montana
406-485 Circle
406-486 Mildred
406-487 Scobey
406-488 Sidney
406-489 Sidney
406-490 Butte
406-491 Butte
406-492 Garrison
406-493 Missoula
406-494 Butte
406-495 Helena
406-496 Butte
406-497 Butte
406-498 Butte
406-499 Seeley Lake
406-502 Helena
406-505 Conrad
406-508 Frenchtown
406-513 Helena
406-514 Culbertson
406-515 Superior
406-518 Belgrade
406-520 Absarokee
406-521 Townsend
406-522 Bozeman
406-523 Missoula
406-524 Montana
406-525 Montana
406-526 Fort Peck
406-527 Saco
406-528 Ronan
406-529 Missoula
406-530 Laurel
406-531 Missoula
406-532 Missoula
406-533 Butte
406-534 Billings
406-535 Lewistown
406-537 Melville
406-538 Lewistown
406-539 Bozeman
406-540 Missoula
406-541 Missoula
406-542 Missoula
406-543 Missoula
406-544 Missoula
406-545 Billings
406-546 Missoula
406-547 White Sulphur Springs
406-548 Bozeman
406-549 Missoula
406-550 Missoula
406-551 Bozeman
406-552 Missoula
406-553 Divide
406-554 Montana
406-556 Bozeman
406-557 Jordan
406-558 Helena
406-559 Anaconda
406-560 Anaconda
406-562 Fairfield
406-563 Anaconda
406-564 Great Falls
406-565 Butte
406-566 Stanford
406-567 Denton
406-568 Ryegate
406-569 Montana
406-570 Bozeman
406-571 Montana
406-572 Martinsdale
406-573 Browning
406-574 Montana
406-575 Montana
406-576 Conrad
406-577 Bozeman
406-578 Wilsall
406-579 Bozeman
406-580 Bozeman
406-581 Bozeman
406-582 Bozeman
406-583 Bloomfield
406-584 Lindsay
406-585 Bozeman
406-586 Bozeman
406-587 Bozeman
406-588 Montana
406-589 Bozeman
406-590 Great Falls
406-591 Billings
406-592 Busby
406-593 Butte
406-594 Helena
406-595 Bozeman
406-596 Dillon
406-597 Shelby
406-598 Billings
406-599 Bozeman
406-600 Bozeman
406-601 Billings
406-602 Bozeman
406-603 Helena
406-604 Great Falls
406-606 Billings
406-607 Kalispell
406-612 Montana
406-615 Thompson Falls
406-616 Three Forks
406-620 Billings
406-621 Fort Benton
406-622 Fort Benton
406-623 Montana
406-624 Bozeman
406-625 Stevensville
406-626 Frenchtown
406-627 Montana
406-628 Laurel
406-629 Montana
406-630 Sidney
406-631 Elmo
406-632 Two Dot
406-633 Park City
406-634 Helena
406-635 Fallon
406-636 Lavina
406-637 Fallon
406-638 Montana
406-639 Lodge Grass
406-640 West Yellowstone
406-641 West Yellowstone
406-642 Victor
406-643 Montana
406-644 Charlo
406-645 Deer Lodge
406-646 West Yellowstone
406-647 Billings
406-648 Montana
406-649 Montana
406-650 Wolf Point
406-651 Billings
406-652 Billings
406-653 Wolf Point
406-654 Malta
406-655 Billings
406-656 Billings
406-657 Billings
406-658 Montana
406-659 Montana
406-660 Dillon
406-661 Billings
406-662 Bridger
406-663 Rapelje
406-664 Belfry
406-665 Montana
406-666 Saint Xavier
406-667 Broadview
406-668 Fromberg
406-669 Molt
406-670 Billings
406-671 Billings
406-672 Billings
406-673 Zortman
406-674 Whitewater
406-675 Polson
406-676 Ronan
406-677 Seeley Lake
406-678 Saint Regis
406-679 Montana
406-680 Malta
406-681 Montana
406-682 Ennis
406-683 Dillon
406-684 Sheridan
406-685 Norris
406-686 Wilsall
406-687 Montana
406-688 Scobey
406-689 Wisdom
406-690 Billings
406-691 Anaconda
406-692 Montana
406-693 Deer Lodge
406-694 Billings
406-695 Wolf Point
406-696 Billings
406-697 Billings
406-698 Billings
406-699 Montana
406-702 Billings
406-707 Lewistown
406-708 Lewistown
406-709 Lakeside
406-715 Busby
406-720 Ashland
406-721 Missoula
406-722 Alberton
406-723 Butte
406-724 Richland
406-725 Larslan
406-726 Arlee
406-727 Great Falls
406-728 Missoula
406-730 Whitefish
406-731 Great Falls
406-732 Montana
406-733 Highwood
406-734 Carter
406-735 Geyser
406-736 Stockett
406-737 Geraldine
406-738 Raynesford
406-739 Loma
406-740 Ashland
406-741 Hot Springs
406-742 Sidney
406-743 Laurel
406-744 Montana
406-745 Montana
406-746 Fort Peck
406-747 Sidney
406-748 Ashland
406-749 Ashland
406-750 Great Falls
406-751 Kalispell
406-752 Kalispell
406-753 Brady
406-754 Condon
406-755 Kalispell
406-756 Kalispell
406-757 Decker
406-758 Kalispell
406-759 Chester
406-760 Great Falls
406-761 Great Falls
406-762 Opheim
406-763 Gallatin Gateway
406-764 Montana
406-765 Plentywood
406-766 Froid
406-767 Montana
406-768 Poplar
406-769 Bainville
406-770 Great Falls
406-771 Great Falls
406-772 Plevna
406-773 Richey
406-774 Lambert
406-775 Ekalaka
406-776 Savage
406-777 Stevensville
406-778 Baker
406-779 Montana
406-780 Columbus
406-781 Great Falls
406-782 Butte
406-783 Montana
406-784 Ashland
406-785 Montana
406-786 Brockton
406-787 Culbertson
406-788 Great Falls
406-789 Medicine Lake
406-790 Culbertson
406-791 Great Falls
406-792 Butte
406-793 Ovando
406-794 Billings
406-795 Wibaux
406-796 Wibaux
406-797 Butte
406-798 Montana
406-799 Great Falls
406-800 Bridger
406-802 Hamilton
406-808 Montana
406-812 Laurel
406-813 Belgrade
406-818 Red Lodge
406-820 Whitefish
406-821 Darby
406-822 Superior
406-823 Livingston
406-824 Montana
406-825 Clinton
406-826 Plains
406-827 Thompson Falls
406-828 Alzada
406-829 Missoula
406-830 Missoula
406-832 Wise River
406-833 Ronan
406-834 Jackson
406-835 Divide
406-836 Great Falls
406-837 Bigfork
406-838 Silver Gate
406-839 Billings
406-840 Montana
406-841 Helena
406-842 Sheridan
406-843 Virginia City
406-844 Lakeside
406-845 Cut Bank
406-846 Deer Lodge
406-847 Noxon
406-848 Emigrant
406-849 Elmo
406-850 Billings
406-851 Miles City
406-852 Miles City
406-853 Miles City
406-854 Kila
406-855 Billings
406-856 Bighorn
406-857 Somers
406-858 Kalispell
406-859 Philipsburg
406-860 Billings
406-861 Billings
406-862 Whitefish
406-863 Whitefish
406-864 Montana
406-865 Dillon
406-866 Great Falls
406-867 Billings
406-868 Great Falls
406-869 Billings
406-870 Great Falls
406-871 Kalispell
406-872 Polson
406-873 Cut Bank
406-874 Miles City
406-875 Worden
406-876 Billings
406-877 Montana
406-878 Great Falls
406-879 Montana
406-880 Missoula
406-881 Whitefish
406-882 Montana
406-883 Polson
406-884 Polson
406-885 Kalispell
406-886 Montana
406-887 Montana
406-888 Columbia Falls
406-889 Montana
406-890 Kalispell
406-891 Plevna
406-892 Columbia Falls
406-893 Peerless
406-894 Billings
406-895 Outlook
406-896 Billings
406-897 Kalispell
406-898 Bozeman
406-899 Great Falls
406-905 Joliet
406-913 Roundup
406-914 Savage
406-915 Montana
406-916 Helena
406-920 Bozeman
406-922 Bozeman
406-923 Great Falls
406-924 Belgrade
406-925 Dillon
406-926 Missoula
406-927 Billings
406-928 Grass Range
406-929 Columbia Falls
406-930 Big Timber
406-931 Big Timber
406-932 Big Timber
406-933 Clancy
406-934 Miles City
406-935 Broadus
406-936 Wilsall
406-937 Sunburst
406-938 Alzada
406-939 Montana
406-941 Montana
406-942 Glasgow
406-943 Sidney
406-944 Miles City
406-945 Montana
406-946 Livingston
406-947 Musselshell
406-948 Glendive
406-949 Townsend
406-951 Miles City
406-952 Great Falls
406-953 Montana
406-954 Roy
406-956 Baker
406-957 Terry
406-960 Dillon
406-961 Corvallis
406-962 Joliet
406-963 Montana
406-964 Vaughn
406-965 Vaughn
406-966 Shelby
406-967 Worden
406-968 Lewistown
406-969 Billings
406-971 Plevna
406-972 Montana
406-973 Sidney
406-974 Circle
406-975 Ekalaka
406-977 Jordan
406-978 Baker
406-979 Richey
406-980 Townsend
406-981 Montana
406-982 Montana
406-983 Ashland
406-984 Birney
406-987 Glendive
406-988 Dillon
406-989 Montana
406-991 Marion
406-992 Helena
406-993 Ennis
406-994 Bozeman
406-995 Ennis
406-996 Helena
406-998 Billings
406-999 Gallatin Gateway