Area codes 937 and 326

Area codes for Dayton and part of southwestern Ohio, United States

Area codes 937 and 326 are telephone area codes in the North American Numbering Plan (NANP) assigned to a numbering plan area (NPA) 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, in a split of area code 513. Area code 326 was added to the numbering plan area to form an overlay complex in March 2020.

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