Area codes 937 and 326

Area codes 937 and 326 are telephone area codes in the North American Numbering Plan assigned to a numbering plan area that encompasses much of the southwestern part of the U.S. state of Ohio, including Dayton and Springfield. Area code 937 was established in September 1996, after a split of area code 513. Area code 326 was added to area code 937 in an overlay plan in March 2020.

Area code 937 was created in a split of Ohio's original NPA for the southwestern part of the state on September 28, 1996. At the time, literature promoting the new area code took advantage of the fact that the digits of 937 spell out "YES" on a standard telephone keypad.

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