Area code 307 is a North American Numbering Plan code for the state of Wyoming, and it includes the city of Cheyenne.

Wyoming Counties within Area Code 307:

Laramie, Natrona, Campbell, Sweetwater, Fremont, Albany, Sheridan, Park, Teton, Uinta, Lincoln, Carbon, Converse, Goshen, Big Horn, Sublette, Platte, Johnson, Washakie, Weston, Crook, Hot Springs, Niobrara.

Wyoming Major Cities within Area Code 307:

Cheyenne, Casper, Laramie, Gillette, Rock Springs, Sheridan, Green River, Evanston, Riverton, Jackson, Cody, Rawlins, Lander, Torrington, Powell, Douglas, Ranchettes, Worland, Buffalo, South Greeley, Fox-Farm College, Wheatland, Newcastle, Mills, Warren AFB, Thermopolis, Kemmerer, Glenrock, Evansville, Lovell, Bar Nunn, North Rock Springs, Lyman, Pinedale, Afton, Greybull, Moose Wilson Road, Wright, Forth Washakie, South Park, Saratoga, Antelope Valley-Crestview, Arapahoe, Lusk, Ethete, Star Valley Ranch, Wilson, Sleepy Hollow, Mountain View, Basin.

Area Code 307 Time Zone?

Wyoming is the 44th state in the United States of America. It’s located in the Mountain Time Zone, which means that it shares a time zone with Colorado, Montana, New Mexico, and Utah. The Wyoming area code is 307.

Go here to see the complete list of United States Area Codes.