Area code 307

Wyoming's numbering plan area and area code (blue)Area code 605Area code 308Area code 970Area code 435Area code 406Area codes 208 and 986
Wyoming's numbering plan area and area code (blue)

Area code 307 is the telephone area code in the North American Numbering Plan for the entire U.S. state of Wyoming.[1] It is one of the 86 original North American area codes created by the American Telephone and Telegraph Company (AT&T) in 1947.[1]

Wyoming's sparse population has not required more than one area code for the state. As of May 2025, it was one of only eleven states with only one area code.[citation needed] 307 is not expected to be exhausted until 2050 by current projections.

Service area

The numbering plan area includes the following communities, with their respective central office codes:

  • Afton: 226, 248, 884, 885, 886, 887
  • Albin: 246
  • Alpine: 654, 656
  • Baggs: 380, 383
  • Basin: 440, 568
  • Big Piney: 260, 276
  • Buffalo: 217, 278, 425, 620, 621, 684, 719
  • Burlington: 762
  • Burns: 547
  • Casper: 215, 224, 230, 232, 233, 234, 235, 236, 237, 243, 247, 251, 253, 258, 259, 261, 262, 265, 266, 267, 268, 277, 315, 333, 337, 377, 439, 441, 462, 472, 473, 577, 702, 724, 776, 797, 995
  • Cheyenne: 214, 220, 221, 222, 256, 274, 275, 286, 287, 316, 317, 365, 369, 414, 421, 426, 432, 433, 443, 459, 475, 477, 509, 514, 529, 630, 631, 632, 633, 634, 635, 637, 638, 640, 650, 666, 701, 757, 771, 772, 773, 775, 777, 778, 823, 829, 920, 996
  • Chugwater: 422
  • Clearmont: 758
  • Cody: 204, 213, 250, 272, 296, 527, 578, 586, 587, 712, 899
  • Cokeville: 229, 270, 279, 600
  • Douglas: 298, 351, 358, 359, 624, 717
  • Dubois: 239, 450, 455
  • East Thermopolis: 480, 722, 864, 921
  • Encampment: 327
  • Evanston: 255, 288, 313, 444, 497, 677, 679, 708, 783, 789, 799
  • Frannie: 664
  • Gas Hills: 457
  • Gillette: 228, 257, 299, 363, 487, 567, 622, 660, 670, 680, 681, 682, 685, 686, 687, 688, 689, 696, 704
  • Glendo: 735
  • Glenrock: 309, 436, 554, 741
  • Green River: 297, 364, 466, 707, 870, 871, 872, 875
  • Greybull: 373, 765
  • Guernsey: 836
  • Hanna: 325, 339, 348
  • Hulett: 467
  • Jackson: 200, 201, 203, 249, 264, 413, 690, 699, 713, 730, 732, 733, 734, 739, 740, 774
  • Kaycee: 738
  • Kemmerer: 723, 727, 800, 828, 877
  • La Barge: 386, 390
  • La Grange: 409, 834
  • Lander: 206, 330, 332, 335, 345, 349, 438, 488, 714
  • Laramie: 223, 314, 343, 399, 460, 703, 721, 742, 745, 755, 760, 761, 766, 977
  • Lingle: 205, 837
  • Lovell: 548, 731
  • Lusk: 216, 334, 340, 481, 759
  • Lyman: 787
  • Manila: 874
  • Medicine Bow: 379, 404, 520
  • Meeteetse,: 868
  • Midwest: 437
  • Moran: 541, 543, 999
  • Moorcroft: 391, 756
  • Mountain View: 747, 780, 782
  • Newcastle: 465, 629, 744, 746, 941, 949
  • Pine Bluffs: 245
  • Pinedale: 231, 360, 367, 537, 749
  • Powell: 202, 219, 254, 271, 716, 754, 764
  • Rawlins: 320, 321, 324, 328, 370, 417, 710
  • Riverton: 240, 463, 709, 840, 850, 851, 854, 855, 856, 857, 858
  • Rock River: 378, 798
  • Rock Springs: 209, 212, 252, 350, 352, 354, 362, 371, 382, 389, 448, 522, 705, 922
  • Saratoga: 326, 329, 447
  • Sheridan: 429, 461, 533, 655, 672, 673, 674, 675, 683, 706, 751, 752, 763
  • Shoshoni: 728, 876
  • Sundance: 281, 282, 283, 290, 790
  • Ten Sleep: 366
  • Thermopolis: 480, 722, 864, 921
  • Torrington: 338, 401, 532, 534, 575, 715
  • Upton: 468
  • West Edgemont: 663
  • West Lyman: 788
  • Wheatland: 241, 269, 322, 331, 720, 779, 881
  • Worland: 347, 375, 388, 431, 718
  • Wright: 464, 939
  • Premium calls (unassigned): 208, 211, 307, 308, 311, 406, 411, 470, 511, 536, 555, 558, 559, 605, 611, 700, 711, 725, 811, 911, 950, 958, 959, 970, 976

See also

References

  1. ^ a b Culkin, Tommy (March 7, 2023). "Happy 307 Day: Wyoming's lone area code explained". Oil City News. Retrieved July 23, 2025.


Wyoming area codes: 307
North: 406
West: 208/986, 406, 435 307 East: 605, 308
South: 435, 970
Colorado area codes: 303/720/983, 719, 748/970
Utah area codes: 385/801, 435
Idaho area codes: 208/986
Montana area codes: 406
South Dakota area codes: 605
Nebraska area codes: 308, 402/531

43°00′N 107°30′W / 43.000°N 107.500°W / 43.000; -107.500

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