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.

Area Code & Prefix Location
406-200 Billings, Mt
406-201 Billings, Mt
406-202 Missoula, Mt
406-203 Missoula, Mt
406-204 Missoula, Mt
406-205 Missoula, Mt
406-206 Billings, Mt
406-207 Missoula, Mt
406-208 Billings, Mt
406-209 Billings, Mt
406-210 Helena, Mt
406-212 Missoula, Mt
406-213 Billings, Mt
406-214 Helena, Mt
406-215 Missoula, Mt
406-216 Great Falls, Mt
406-217 Great Falls, Mt
406-218 Missoula, Mt
406-219 Billings, Mt
406-220 Billings, Mt
406-221 Helena, Mt
406-222 Livingston, Mt
406-223 Billings, Mt
406-224 Billings, Mt
406-225 Boulder, Mt
406-227 East Helena, Mt
406-228 Glasgow, Mt
406-229 Missoula, Mt
406-230 Billings, Mt
406-231 Missoula, Mt
406-232 Miles City, Mt
406-233 Miles City, Mt
406-234 Miles City, Mt
406-237 Billings, Mt
406-238 Billings, Mt
406-239 Missoula, Mt
406-240 Missoula, Mt
406-241 Missoula, Mt
406-242 Missoula, Mt
406-243 Missoula, Mt
406-244 Clinton, Mt
406-245 Billings, Mt
406-246 Clinton, Mt
406-247 Billings, Mt
406-248 Billings, Mt
406-249 Helena, Mt
406-250 Helena, Mt
406-251 Missoula, Mt
406-252 Billings, Mt
406-253 Missoula, Mt
406-254 Billings, Mt
406-255 Billings, Mt
406-256 Billings, Mt
406-257 Kalispell, Mt
406-258 Missoula, Mt
406-259 Billings, Mt
406-260 Missoula, Mt
406-261 Missoula, Mt
406-262 Havre, Mt
406-263 Glasgow, Mt
406-265 Havre, Mt
406-266 Townsend, Mt
406-268 Great Falls, Mt
406-269 Missoula, Mt
406-270 Helena, Mt
406-271 Conrad, Mt
406-272 Billings, Mt
406-273 Lolo, Mt
406-274 Missoula, Mt
406-275 Ronan, Mt
406-276 Lima, Mt
406-278 Conrad, Mt
406-280 Missoula, Mt
406-281 Billings, Mt
406-282 Amsterdam, Mt
406-283 Libby, Mt
406-284 Manhattan, Mt
406-285 Three Forks, Mt
406-286 Reserve, Mt
406-287 Whitehall, Mt
406-288 Alberton, Mt
406-289 Missoula, Mt
406-290 Billings, Mt
406-291 Libby, Mt
406-293 Libby, Mt
406-294 Billings, Mt
406-295 Troy, Mt
406-296 Eureka, Mt
406-298 Billings, Mt
406-299 Missoula, Mt
406-300 Kalispell, Mt
406-301 Helena, Mt
406-302 Helena, Mt
406-303 Missoula, Mt
406-305 Billings, Mt
406-309 Missoula, Mt
406-310 Missoula, Mt
406-312 Southfield, Mt
406-313 Helena, Mt
406-314 Missoula, Mt
406-315 Helena, Mt
406-317 Missoula, Mt
406-318 Billings, Mt
406-319 Missoula, Mt
406-320 Billings, Mt
406-321 Billings, Mt
406-322 Columbus, Mt
406-323 Roundup, Mt
406-324 Helena, Mt
406-325 Billings, Mt
406-327 Missoula, Mt
406-329 Missoula, Mt
406-330 Missoula, Mt
406-331 Billings, Mt
406-332 Missoula, Mt
406-333 Pray, Mt
406-334 Coeur D Alene, Mt
406-335 Sunburst, Mt
406-338 Browning, Mt
406-340 Missoula, Mt
406-345 Glendive, Mt
406-346 Forsyth, Mt
406-347 Rosebud, Mt
406-348 Huntley, Mt
406-350 Missoula, Mt
406-351 Billings, Mt
406-352 Havre, Mt
406-353 Harlem, Mt
406-356 Forsyth, Mt
406-359 Glendive, Mt
406-360 Helena, Mt
406-361 Helena, Mt
406-362 Lincoln, Mt
406-363 Hamilton, Mt
406-364 Hinsdale, Mt
406-365 Glendive, Mt
406-366 Helena, Mt
406-369 Missoula, Mt
406-370 Helena, Mt
406-371 Billings, Mt
406-373 Billings, Mt
406-375 Hamilton, Mt
406-377 Glendive, Mt
406-380 Helena, Mt
406-381 Helena, Mt
406-382 Missoula, Mt
406-384 Billings, Mt
406-388 Belgrade, Mt
406-389 Helena, Mt
406-390 Helena, Mt
406-391 Missoula, Mt
406-393 Missoula, Mt
406-396 Helena, Mt
406-397 Hingham, Mt
406-399 Helena, Mt
406-403 Great Falls, Mt
406-404 Bozeman, Mt
406-407 Helena, Mt
406-410 Missoula, Mt
406-413 Billings, Mt
406-414 Bozeman, Mt
406-415 Helena, Mt
406-417 Missoula, Mt
406-420 Missoula, Mt
406-422 Helena, Mt
406-424 Shelby, Mt
406-425 Billings, Mt
406-426 Billings, Mt
406-430 Helena, Mt
406-431 Helena, Mt
406-433 Sidney, Mt
406-434 Shelby, Mt
406-435 Billings, Mt
406-437 Helena, Mt
406-438 Helena, Mt
406-439 Missoula, Mt
406-440 Helena, Mt
406-441 Helena, Mt
406-442 Helena, Mt
406-443 Helena, Mt
406-444 Helena, Mt
406-445 Roberts, Mt
406-446 Red Lodge, Mt
406-447 Helena, Mt
406-449 Helena, Mt
406-450 Helena, Mt
406-451 Billings, Mt
406-452 Great Falls, Mt
406-453 Great Falls, Mt
406-454 Great Falls, Mt
406-455 Great Falls, Mt
406-457 Helena, Mt
406-458 Helena, Mt
406-459 Helena, Mt
406-460 Missoula, Mt
406-461 Helena, Mt
406-464 Roy, Mt
406-465 Helena, Mt
406-467 Fairfield, Mt
406-468 Cascade, Mt
406-470 Helena, Mt
406-471 Helena, Mt
406-475 Canyon Ferry, Mt
406-478 Billings, Mt
406-479 Helena, Mt
406-480 Billings, Mt
406-482 Sidney, Mt
406-486 Fallon, Mt
406-488 Sidney, Mt
406-489 Billings, Mt
406-490 Helena, Mt
406-491 Missoula, Mt
406-492 Avon, Mt
406-493 Missoula, Mt
406-494 Butte, Mt
406-495 Helena, Mt
406-496 Butte, Mt
406-497 Butte, Mt
406-498 Helena, Mt
406-499 Missoula, Mt
406-502 Helena, Mt
406-505 Missoula, Mt
406-508 Missoula, Mt
406-513 Helena, Mt
406-514 Billings, Mt
406-515 Missoula, Mt
406-518 Billings, Mt
406-520 Billings, Mt
406-521 Helena, Mt
406-522 Bozeman, Mt
406-523 Missoula, Mt
406-528 Ronan, Mt
406-529 Helena, Mt
406-530 Billings, Mt
406-531 Helena, Mt
406-532 Missoula, Mt
406-533 Butte, Mt
406-534 Billings, Mt
406-535 Lewistown, Mt
406-538 Lewistown, Mt
406-539 Billings, Mt
406-540 Missoula, Mt
406-541 Missoula, Mt
406-542 Missoula, Mt
406-543 Missoula, Mt
406-544 Helena, Mt
406-545 Billings, Mt
406-546 Helena, Mt
406-548 Bozeman, Mt
406-549 Missoula, Mt
406-550 Missoula, Mt
406-551 Billings, Mt
406-552 Missoula, Mt
406-553 Missoula, Mt
406-555 East Helena, Mt
406-556 Bozeman, Mt
406-557 Jordan, Mt
406-558 Missoula, Mt
406-559 Helena, Mt
406-560 Helena, Mt
406-562 Augusta, Mt
406-563 Anaconda, Mt
406-564 Missoula, Mt
406-565 Missoula, Mt
406-566 Stanford, Mt
406-570 Billings, Mt
406-571 Missoula, Mt
406-573 Missoula, Mt
406-574 Powell, Mt
406-576 Missoula, Mt
406-577 Billings, Mt
406-579 Billings, Mt
406-580 Billings, Mt
406-581 Billings, Mt
406-582 Bozeman, Mt
406-583 Bloomfield, Mt
406-584 Lindsay, Mt
406-585 Bozeman, Mt
406-586 Bozeman, Mt
406-587 Bozeman, Mt
406-589 Billings, Mt
406-590 Helena, Mt
406-591 Billings, Mt
406-593 Missoula, Mt
406-594 Helena, Mt
406-595 Billings, Mt
406-596 Billings, Mt
406-597 Billings, Mt
406-598 Billings, Mt
406-599 Billings, Mt
406-600 Billings, Mt
406-601 Billings, Mt
406-602 Bozeman, Mt
406-603 Helena, Mt
406-604 Great Falls, Mt
406-606 Billings, Mt
406-607 Kalispell, Mt
406-612 Helena, Mt
406-616 Billings, Mt
406-620 Glasgow, Mt
406-621 Helena, Mt
406-623 Billings, Mt
406-624 Bozeman, Mt
406-625 Missoula, Mt
406-626 Frenchtown, Mt
406-628 Laurel, Mt
406-629 Billings, Mt
406-630 Billings, Mt
406-631 Helena, Mt
406-633 Park City, Mt
406-634 Helena, Mt
406-638 Crow Agency, Mt
406-640 Billings, Mt
406-641 Billings, Mt
406-642 Victor, Mt
406-645 Missoula, Mt
406-647 Billings, Mt
406-650 Glasgow, Mt
406-651 Billings, Mt
406-652 Billings, Mt
406-653 Wolf Point, Mt
406-654 Malta, Mt
406-655 Billings, Mt
406-656 Billings, Mt
406-657 Billings, Mt
406-660 Missoula, Mt
406-661 Billings, Mt
406-665 Hardin, Mt
406-670 Billings, Mt
406-671 Billings, Mt
406-672 Billings, Mt
406-674 Whitewater, Mt
406-676 Ronan, Mt
406-677 Clinton, Mt
406-679 Billings, Mt
406-680 Malta, Mt
406-681 Grant, Mt
406-682 Ennis, Mt
406-683 Dillon, Mt
406-685 Harrison, Mt
406-687 Glendive, Mt
406-688 Glasgow, Mt
406-690 Billings, Mt
406-691 Missoula, Mt
406-692 Helena, Mt
406-694 Billings, Mt
406-696 Billings, Mt
406-697 Billings, Mt
406-698 Billings, Mt
406-699 Billings, Mt
406-702 Billings, Mt
406-707 Helena, Mt
406-708 Missoula, Mt
406-709 Missoula, Mt
406-715 Billings, Mt
406-720 Billings, Mt
406-721 Missoula, Mt
406-723 Butte, Mt
406-726 Clinton, Mt
406-727 Great Falls, Mt
406-728 Missoula, Mt
406-730 Missoula, Mt
406-731 Great Falls, Mt
406-740 Billings, Mt
406-741 Hot Springs, Mt
406-742 Fairview, Mt
406-743 Billings, Mt
406-745 Clinton, Mt
406-746 Nashua, Mt
406-747 Fairview, Mt
406-749 Billings, Mt
406-750 Helena, Mt
406-751 Kalispell, Mt
406-752 Kalispell, Mt
406-754 Clinton, Mt
406-755 Kalispell, Mt
406-756 Kalispell, Mt
406-758 Kalispell, Mt
406-759 Chester, Mt
406-760 Great Falls, Mt
406-761 Great Falls, Mt
406-770 Missoula, Mt
406-771 Great Falls, Mt
406-776 Savage, Mt
406-777 Stevensville, Mt
406-778 Baker, Mt
406-780 Billings, Mt
406-781 Helena, Mt
406-782 Butte, Mt
406-784 Ashland, Mt
406-786 Brockton, Mt
406-788 Helena, Mt
406-790 Billings, Mt
406-791 Great Falls, Mt
406-792 Helena, Mt
406-793 Clinton, Mt
406-794 Billings, Mt
406-797 Opportunity, Mt
406-798 Sidney, Mt
406-799 Missoula, Mt
406-800 Billings, Mt
406-802 Hamilton, Mt
406-808 Helena, Mt
406-812 Billings, Mt
406-813 Billings, Mt
406-818 Billings, Mt
406-820 Helena, Mt
406-821 Darby, Mt
406-822 Alberton, Mt
406-823 Livingston, Mt
406-824 Missoula, Mt
406-825 Clinton, Mt
406-826 Plains, Mt
406-827 Thompson Falls, Mt
406-829 Missoula, Mt
406-830 Missoula, Mt
406-833 Helena, Mt
406-834 Wisdom, Mt
406-835 Melrose, Mt
406-836 Great Falls, Mt
406-837 Bigfork, Mt
406-839 Billings, Mt
406-841 Helena, Mt
406-842 Sheridan, Mt
406-844 Lakeside, Mt
406-845 Helena, Mt
406-846 Deer Lodge, Mt
406-848 Gardiner, Mt
406-850 Billings, Mt
406-851 Billings, Mt
406-852 Billings, Mt
406-853 Billings, Mt
406-854 Marion, Mt
406-855 Billings, Mt
406-856 North Custer, Mt
406-857 Somers, Mt
406-858 Kalispell, Mt
406-859 Philipsburg, Mt
406-860 Billings, Mt
406-861 Billings, Mt
406-862 Whitefish, Mt
406-863 Whitefish, Mt
406-865 Helena, Mt
406-866 Ulm, Mt
406-867 Billings, Mt
406-868 Helena, Mt
406-869 Billings, Mt
406-870 Great Falls, Mt
406-871 Helena, Mt
406-872 Polson, Mt
406-873 Cut Bank, Mt
406-874 Miles City, Mt
406-876 Billings, Mt
406-878 Great Falls, Mt
406-879 Missoula, Mt
406-880 Helena, Mt
406-883 Polson, Mt
406-884 Polson, Mt
406-885 Helena, Mt
406-890 Missoula, Mt
406-891 Billings, Mt
406-892 Columbia Falls, Mt
406-894 Billings, Mt
406-896 Billings, Mt
406-897 Missoula, Mt
406-898 Bozeman, Mt
406-899 Missoula, Mt
406-905 Billings, Mt
406-913 Circle, Mt
406-916 Bozeman, Mt
406-920 Billings, Mt
406-922 Billings, Mt
406-923 Missoula, Mt
406-924 Billings, Mt
406-925 Helena, Mt
406-926 Missoula, Mt
406-927 Billings, Mt
406-929 Helena, Mt
406-930 Billings, Mt
406-931 Billings, Mt
406-933 Clancy, Mt
406-934 Miles City, Mt
406-936 Billings, Mt
406-939 Billings, Mt
406-941 Billings, Mt
406-942 Billings, Mt
406-943 Billings, Mt
406-944 Billings, Mt
406-945 Missoula, Mt
406-946 Billings, Mt
406-947 Musselshell, Mt
406-948 Billings, Mt
406-949 Missoula, Mt
406-951 Billings, Mt
406-952 Helena, Mt
406-953 Billings, Mt
406-954 Roy, Mt
406-956 Billings, Mt
406-960 Missoula, Mt
406-961 Corvallis, Mt
406-962 Joliet, Mt
406-964 Vaughn, Mt
406-965 Vaughn, Mt
406-966 Missoula, Mt
406-968 Missoula, Mt
406-969 Billings, Mt
406-973 Sidney, Mt
406-977 Jordan, Mt
406-978 Baker, Mt
406-980 Helena, Mt
406-981 Miles City, Mt
406-983 Ashland, Mt
406-987 Glendive, Mt
406-988 Missoula, Mt
406-989 Billings, Mt
406-991 Helena, Mt
406-992 Helena, Mt
406-994 Bozeman, Mt
406-996 Helena, Mt
406-998 Billings, Mt