Shimane (The villages of 佐比売, 朝山, and 富山 split and merged into the city of Ōda and the town of Tagi, Hikawa District (now the city of Izumo)) October 17, 1954 Nishiyamanashi District (西山梨郡), Yamanashi (The villages of 山城, 住吉, 朝井, 玉諸, 甲運, 能泉, and 千代田 merged into the city of Kōfu) January 15, 1955 Utasutsu District (歌棄郡), Hokkaido (The village of Utasutsu merged into the town of Suttsu, Suttsu District; the village of Neppu merged with the village of Kuromatsunai and parts of the village of Tarukishi from Suttsu District to form the village of Sanwa (now the town of Kuromatsunai)) January 15, 1955 Tsuruga District (敦賀郡), Fukui (The villages of 東浦, 東郷, 中郷, 愛発, and 粟野 merged into the city of Tsuruga) April 1, 1955 Futoru District (太櫓郡), Hokkaido (The village of Futoru merged with the town of Tōsetana, Setana District to form the town of Kitahiyama) September 30, 1956 Bikuni District (美国郡), Hokkaido (The town of Bikuni merged into the town of Shakotan, Shakotan District) September 30, 1956 Yana District (八名郡), Aichi (The village of Yamayoshida merged into the town of Hōrai, Minamishitara District) September 30, 1956 Kawage (河芸郡) and Ano (安濃郡) Districts, Mie (Merged to form Age District) September 30, 1956 Ikaruga District (何鹿郡), Kyoto (The village of Saga split and merged into the cities of Ayabe and Fukuchiyama) March 21, 1957 Minamimurayama District (南村山郡), Yamagata (The village of Yamamoto merged into the city of Kaminoyama) August 1, 1957 Nemuro District (根室郡), Hokkaido (The town of Nemuro and the village of Wada merged to form the city of Nemuro) March 31, 1958 Minamikatsuragi District (南葛城郡), Nara (The town of Gose and the villages of Kuzu, Taishō, and Katsujō merged and granted city status to form the city of Gose) April 1, 1958 Oshiyoro District (忍路郡), Hokkaido (The village of Shioya merged into the city of Otaru) April 1, 1958 Minamiokitama District (南置賜郡), Yamagata (The village of Nakatsugawa merged into the town of Iide, Nishiokitama District) July 1, 1958 Arima District (有馬郡), Hyōgo (The town of Sanda granted city status to become the city of Sanda) October 1, 1958 Nakakawachi District (中河内郡), Osaka (The town of Kashiwara granted city status to become the city of Kashiwara) November 3, 1958 Esashi District (江刺郡), Iwate (The town of Esashi granted city status to become the city of Esashi) January 1, 1959 Uchi District (宇智郡), Nara (The village of Minamiuchi