merged into the city of Gojō) April 1, 1959 Hanasaki District (花咲郡), Hokkaido (The village of Habomai merged into the city of Nemuro) April 1, 1959 Nii District (新居郡), Ehime (The town of Sumino merged into the city of Niihama) September 30, 1959 Minamikuwada District (南桑田郡), Kyoto (The village of merged into the city of Kameoka) 1960~1988 October 1, 1962 Ashikaga District (足利郡), Tochigi (The towns of Mikuriya and Sakanishi merged into the city of Ashikaga) April 1, 1963 Inaba District (稲葉郡), Gifu (The towns of Sohara, Naka, Inaha, and Unuma merged to form the city of Kakamigahara) May 1, 1965 Asaka District (安積郡), Fukushima (The towns of Asaka, Hiwada, Fukuyama, Atami, and the villages of Mihota, Ouse, Katahira, Kikuta, and Konan merged into the city of Kōriyama) October 1, 1966 Iwaki District (石城郡), Fukushima (The towns of Yotsukura, Ogawa, Tōno, the villages of Kawamae, Miwa, Yoshima, Tabito, 2 towns and villages from Futaba District, and the cities of Taira, Jōban, Iwaki, Nakoso, and Uchigō merged to form the city of Iwaki) January 1, 1967 Chiba District (千葉郡), Chiba (The town of Yachiyo gained city status to become the city of Yachiyo) April 1, 1967 Kasai District (加西郡), Hyōgo (The towns of Hōjō, Kasai, and Izumi merged to form the city of Kasai) October 1, 1967 Ichihara District (市原郡), Chiba (The town of Nansō and the village of Kamo merged into the city of Ichihara) May 1, 1968 Nishichikuma District (西筑摩郡), Nagano (Renamed to Kiso District (木曽郡)) October 1, 1968 Shinobu District (信夫郡), Fukushima (The town of Azuma merged into the city of Fukushima) January 1, 1969 Abe District (安倍郡), Shizuoka (The villages of Ōkōchi, Umegashima, Tamakawa, Ikawa, Kiyosawa, and Ōkawa merged into the city of Shizuoka) April 1, 1969 Suki (周吉郡), Ōchi District (穏地郡), Ama (海士郡), and Chibu (知夫郡) Districts, Shimane (Merged to form Oki District) August 1, 1970 Yoribetsu District (幌別郡), Hokkaido (The town of Noboribetsu gained city status to become the city of Noboribetsu) November 1, 1970 Chitose District (千歳郡), Hokkaido (The town of Eniwa gained city status to become the city of Eniwa) November 3, 1970 Kitatama District (北多摩郡), Tokyo (The town of Murayama gained city status to become the city of Musashimurayama) December 1, 1970 Higashikasugai District (東春日井郡), Aichi (The town of Asahi gained city status to become the city of Owariasahi) December 1, 1970 Hekikai District (碧海郡), Aichi (The town of Takahama gained town