Ushimado-cho(33361), Oku-cho(33362) and Osafune-cho(33363) in Oku-gun are merged, and Setouchi-shi(33212) is newly established.
牛窓町(33361)、邑久町(33362)、長船町(33363)が合併し、瀬戸内市(33212)を新設