The Atchison, Topeka & Santa Fe Railway built a station at this site in 1899, which it named Copan, after the city of Copán, Honduras. However, when a post office was established here in 1900, it was designated as Lawton. The settlement was renamed Weldon in 1901, but reverted to Copan in 1904. It was incorporated under that name in Indian Territory in 1906. The Copan school district was founded in 1906, as well. By 1907, the town had 305 residents.