- Area code 406
The map to the right is clickable; click on an area code to go to the page for that code.
Area code 250 poly 66 33 57 25 52 0 198 0 198 54Area code 403 poly 198 55 198 0 419 0 418 72 265 63Area code 306 poly 373 71 419 71 419 212 364 210Area code 701 poly 364 212 363 267 419 267 419 212Area code 605 poly 140 233 133 268 363 269 362 255Area code 307 poly 1 21 15 23 6 70 12 85 12 99 37 137 47 141 36 165 39 178 31 179 32 187 35 195 51 188 58 216 65 222 60 221 61 230 71 230 71 248 77 254 79 247 92 253 93 246 110 250 121 250 125 243 130 256 135 259 134 268 1 267Area code 208 desc top-rightArea code 406 is the
telephone area code serving all of the state ofMontana .Billings prefixes in area code (406)-206 208 215 237 238 245 247 248 252 254 255 256 259 272 281 294 325 371 373 384 435 534 545 591 598 620 651 652 655 656 657 661 670 671 672 690 694 696 697 698 794 839 850 855 860 861 867 869 894 896, Bozeman and
Gallatin Valley prefixes in the area code: 282, 284, 285, 388, 522, 556, 582, 585, 586, 587, 624 (Bresnan cable VOIP), 763, 994, 922,
Butte prefixes in area code (406)-310 490 491 494 496 565 723 782
Helena prefixes in area code (406)-225 227 235 266 362 422 441 442 443 444 449 457 458 475 492 495 547 562 667 846 932 933ee also
Area Code Box 6 | State = MT | Width=40%
This = 406
N = 403/587, 250/778, 306
S = 208, 307
E = 605, 701
W = 208
S1 = AB | S2 = BC | S3 = ID | S4 = ND | S5 = SD | S6 = WY
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