District Timeline

• October 1, 1889 - In the cadastral reforms of the early Meiji period, Hekikai District was formed, and initially consisted of three towns (Chiryū, Kariya and Ohama) and 56 villages.
• October 20, 1890 - Parts of the village of Takatana [the section of Enomae] was split off to form the village of Enomae. (3 towns, 57 villages)
• April 1, 1891 - The establishment of the district/county system was implemented.
• September 8, 1891:
  • Parts of the village of Shikizaki (Shikisaki) [the section of Fushimiya] was split off to form the village of Fushimiya. (3 towns, 58 villages)
  • Parts of the village of Fujino [the sections of Higashimakiuchi, Kamisasaki, Shimosasaki and Kōno] was split off to form the village of Shigasuka. (3 towns, 59 villages)
• September 14, 1891 - Parts of the village of Sakai [the section of Higashisakai] was split off to form the village of Higashisakai. (3 towns, 60 villages)
• November 10, 1891 - The village of Akumi was split off into two new ones: the sections of Nehuanki (Nemunoki), Fukuoke and Takahashi would form the village of Nehuanki (Nemunoki); while the remaining sections of Kamiaono, Shimoaono and Ariie (Saiki) would form the village of Aono. (3 towns, 61 villages)
• November 28, 1891 - The village of Shimoshigehara was split off into two new ones: the sections of Hajōdo and Takasu would form the village of Hantaka; while the remaining section of Shimoshigehara would form the village of Shigehara. (3 towns, 62 villages)
• August 3, 1892 - The village of Kitaohama gained town status and was renamed as the town of Shinkawa. (4 towns, 61 villages)
• February 19, 1893 - The village of Yasaku (Yahagi) gained town status. (5 towns, 60 villages)
• June 22, 1896 - Parts of the village of Kasukai (Kasūmi) [the sections of Nakanogō and Doi] was split off to form the village of Nakai. (5 towns, 61 villages)
• July 9, 1900 - The village of Takahama gained town status. (6 towns, 60 villages)
• April 4, 1901 - Parts of the village of Hongō [the sections of Watari and Tsutsubari] was split off to form the village of Watari. (6 towns, 61 villages)
• May 1, 1906 - The following towns and villages were implemented with the following mergers: (7 towns and 9 villages)
  • the town of Takahama: the former town of Takahama, and the former villages of Yoshihama and Takatori
  • the town of Chiryū: the former town of Chiryū, and the former villages of Ushihashi, Kamishigehara and Nagasaki (partially) [the sections of Nishichū (Nishinaka), Tanida (Yata) and Yatsuda (Yatsuta)]
  • the town of Anjō: the former villages of Anjō, Nagasaki (partially) [the section of Sasame (Shinome)], Sato, Minowa, Fukama (Fukugawa), Akamatsu, Ima, Hiraki (Hirataka) and Furui
  • the village of Sakurai: the former villages of Sakurai, Fujino, Ogawa (Kogawa) and Mitsukawa (Mikkawa)
  • the village of Meiji: the former villages of Yonezu (Yonadozu), Nishihana (Seitan), Higashihana (Higashibata), Nezaki, Jōgairi, Izumi and Enomae (Enokimae)
  • the village of Yosami: the former villages of Takatana, Ogakie, Noda, Hantaka and Nagasaki (partially) [the section of Iguiyama]
  • the town of Kariya: the former town of Kariya, and the former villages of Shigehara, Oyama, Aizuma and Motokariya
  • the village of Fujimatsu: the former villages of Sakai, Higashisakai, Hitotsugi and Aimi (Aimami)
  • the village of Kamigō: Unebe (Unebu), Hisaeno, Masuzuka, Ueno and Wakai (Kazue)
  • the village of Takaoka: the former villages of Komaba, Wakazono, Tsutsumi and Take
  • the village of Mutsumi: the former villages of Urabe, Kasūmi, Nakai, Nakajima (Nakashima), Nehuanki (Nemunoki) and Aono
  • the town of Yasaku (Yahagi): the former town of Yasaku (Yahagi), and the former villages of Nakagō (Chūgō), Hongō, Nagase, Shiki and Shigasuka
  • the village of Asahi: the former villages of Shikizaki (Shikisaki), Fushimiya and Washizuka
• April 1, 1923 - The district council was abolished, while the district office remained.
• January 1, 1924 - The village of Tanao gained town status. (8 towns, 8 villages)
• July 1, 1926 - The district office was abolished, thus the area remained for geographic purposes.
• April 5, 1948 - The towns of Ohama, Shinkawa and Tanao were merged to form the city of Hekinan. (5 towns, 7 villages)
• April 1, 1950 - The town of Kariya gained city status. (4 towns, 7 villages)
• May 5, 1952 - The town of Anjō gained city status. (3 towns, 7 villages)
• May 1, 1955 - The following towns and villages were implemented with the following mergers: (2 towns and 4 villages)
  • The village of Fujimatsu and parts of the village of Yosami [the sections of Noda, Hanjōdo, Takasu, and Ogakie] were merged into the city of Kariya.
  • The remaining parts of the village of Yosami [the section of Iguiyama Nihongi Takatana] were merged into the city of Anjō.
  • The village of Meiji was split off and distant sections were merged into the cities of Hekinan [the section of Nishihana (Seitan)], Anjō [the sections of Higashihana (Higashibata), Nezaki, Enomae (Enokimae), Jōgairi and Ishii] and Nishio [the sections of Yonezu (Yonadozu) and Minaminakane].
  • The town of Yasaku (Yahagi) was merged into the city of Okazaki.
• May 1, 1956 - The village of Tajaoka gained town status. (3 towns, 3 villages)
• June 5, 1956 - The village of Sakurai gained town status. (4 towns, 2 villages)
• October 15, 1958 - The village of Mutsumi gained town status. (5 towns, 1 village)
• April 1, 1961 - The village of Kamigō gained town status. (6 towns)
• October 15, 1962 - The town of Mutsumi was merged into the city of Okazaki. (5 towns)
• March 1, 1964 - The town of Kamigō was merged into the city of Toyota. (4 towns)
• September 1, 1965 - The town of Takaoka was merged into the city of Toyota. (3 towns)
• April 1, 1967 - The town of Sakurai was merged into the city of Anjō. (2 towns)
• December 1, 1970 - The towns of Chiryū and Takahama were both elevated to city status. Therefore, Hekikai District was dissolved as a result of this merger.