1973년 7월 1일자로 대통령령 제6543호로 삽교면이 삽교읍으로 승격되어 삽교면사무소도 삽교읍사무소로 승격되었다.
As of July 1, 1973, Sapgyo-myeon was promoted to Sapgyo-eup by Presidential Decree No. 6543 and the Sapgyo-myeon Office was also promoted to Sapgyo-eup Office.