Area code 307

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Wyoming's numbering plan area and area code (blue) Area code WY.png
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]

Contents

Because of its sparse population, Wyoming has required only one area code. [1] As of May 15, 2025, it was one of only nine states with only one area code.[ citation needed ]

Service area

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

See also

References

  1. 1 2 3 Culkin, Tommy (March 7, 2023). "Happy 307 Day: Wyoming's lone area code explained". Oil City News. Retrieved 2025-07-23.
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′N107°30′W / 43.000°N 107.500°W / 43.000; -107.500

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