渋川市(10208)、北橘村(10301)、赤城村(10302)、子持村(10341)、小野上村(10342)、伊香保町(10343)が合併し、渋川市を新設
Shibukawa-shi(10208), Kitatachibana-mura(10301), Akagi-mura(10302) in Seta-gun, Komochi-mura(10341), Onogami-mura(10342) and Ikaho-machi(10343) in Kitagumma-gun are merged, and Shibukawa-shi is newly established.