307 Area Code Data

Area code 307 has a total estimated population of 502,458 people and covers the following localities in Wyoming:

  • Afton
  • Albin
  • Alzada
  • Arvada
  • Baggs
  • Basin
  • Belle Fourche
  • Big Piney
  • Buffalo
  • Burns
  • Carpenter
  • Casper
  • Cheyenne
  • Chugwater
  • Clearmont
  • Cody
  • Cokeville
  • Crowheart
  • Dayton
  • Decker
  • Douglas
  • Driggs
  • Dubois
  • Edgemont
  • Evanston
  • Farson
  • Freedom
  • Gillette
  • Glendo
  • Glenrock
  • Green River
  • Guernsey
  • Hulett
  • Jackson
  • Jeffrey City
  • Kemmerer
  • Lagrange
  • Lander
  • Laramie
  • Lingle
  • Lusk
  • Lyman
  • Medicine Bow
  • Midwest
  • Montpelier
  • Moorcroft
  • Moran
  • Mountain View
  • Newcastle
  • Osage
  • Pine Bluffs
  • Pinedale
  • Powell
  • Rawlins
  • Riverton
  • Rock Springs
  • Sheridan
  • Shoshoni
  • Spearfish
  • Story
  • Sundance
  • Thermopolis
  • Torrington
  • Upton
  • Wheatland
  • Worland
  • Wright
  • Wyola
  • Yellowstone National Park

The (307) area code is comprised of 339 unique phone exchanges: