On October 1, 2005, theses towns, along with the town of Tokuji (from Saba District), were merged with the old city of Yamaguchi to create the new and expanded city of Yamaguchi. Yoshiki District was dissolved as a result of this merger.
District Timeline
Mergers and separations
1889 - Due to enforcement of the town and village system in Japan, the town of Yamaguchi[1] and the villages of Kami-unorei, Shimo-unorei, Yoshiki, Miyano, Ōuchi, Hirakawa, Yabara-asada, Niho, Osaba, Daidō, Suzenji, Sue, Natajima, Ogōri, Kagawa, Aiofutajima, Aio, Iseki, Higashi-kiwa and Nishi-kiwa were formed as Yoshiki District. (1 town, 20 villages)
July 1, 1898 - The village of Yabara-asada changed its name to the village of Ōtoshi.
April 1, 1899 - The village of Sayama broke off from the village of Iseki. (1 town, 21 villages)
August 1, 1901 - The village of Ogōri was elevated to town status to become the town of Ogōri. (2 towns, 20 villages)
April 1, 1905 - The town of Yamaguchi absorbed the village of Kami-unorei. (2 towns, 19 villages)
July 1, 1915 - The town of Yamaguchi absorbed the village of Shimo-unorei. (2 towns, 18 villages)
April 10, 1929 - The town of Yamaguchi, and the village of Yoshiki were merged to form the city of Yamaguchi. (1 town, 17 villages)
April 29, 1940 - The village of Aio was elevated to town status to become the town of Aio. (2 towns, 16 villages)
November 3, 1940 - The village of Iseki was renamed and elevated to town status to become the town of Ajisu. (3 towns, 15 villages)
April 1, 1941 - The village of Miyano was merged into the city of Yamaguchi. (3 towns, 14 villages)
November 1, 1943 - The village of Nishi-kiwa was merged into the city of Ube. (3 towns, 13 villages)
November 23, 1947 - The town of Ajisu broke off from the city of Yamaguchi. (2 towns, 6 villages)
November 1, 1949 - The town of Ogōri broke off from the city of Yamaguchi. (3 towns, 6 villages)
October 1, 1954 - The village of Higashi-kiwa was merged into the city of Ube. (3 towns, 5 villages)
April 1, 1955 - The villages of Ōuchi, Niho and Osaba were merged to create the town of Ōuchi. (4 towns, 2 villages)
April 10, 1955 - The village of Daidō was merged into the city of Hōfu. (4 towns, 1 village)
November 3, 1956 - The village of Suzenji was merged into the city of Yamaguchi. (4 towns)
May 1, 1963 - The town of Ōuchi was merged into the city of Yamaguchi. (3 towns)
October 1, 2005 - The towns of Aio, Ajisu and Ogōri, along with the town of Tokuji (from Saba District), were merged with the old city of Yamaguchi to create the new and expanded city of Yamaguchi. Yoshiki District was dissolved as a result of this merger.[2][3]
^40 towns (Kami-Kanakoso, Shimo-Kanakoso, Yawatanobaba, Noda, Kami-Tatekōji, Shimo-Tatekōji, Ishigan-non, Dōso, Enseiji, Dōnomae, Ōichi, Shogan-shōji, Kubo-shōji, Sentō-shōji, Shinbaba, Ushirogawara, Nakagawara, Hayamada, Shin, Komeya, Otsubone-shōji, Ima-shōji, Nakaichi, Aimono-shōji, Tachiuri, Matsunoki, Kitano-shōji, Babadono-shōji, Yonedono-shōji, Dōjōmonzen, Imaichi, Imamichi, Wani-ishi, Ōzuke, Shinbashi, Nishimonzen, Itoyone-shōji, Arataka, Ta and Nakasanai) were merged and form the Town of Yamaguchi at this time.
^住民基本台帳人口移動報告年報 [Annual Report on Population Movement in the Basic Resident Register] (in Japanese). 総務庁統計局. 2005. p. 148. Yamaguchi-shi, Tokuji-cho, Aio-cho, Ogori-cho and Ajisu-cho were incorporated into a newly established Yamaguchi-shi as of October 1, 2005.
^"山口県央部1市4町合併について - 山口市ウェブサイト". Yamaguchi City Website. Retrieved 2024-02-07. 平成17年10月1日に山口市、小郡町、秋穂町、阿知須町、徳地町の旧1市4町が合併し、新しい山口市が誕生しました。
