On February 13, 2005, the towns of Hōhoku, Kikugawa, Toyoura and Toyota were merged into the expanded city of Shimonoseki. Toyoura District was dissolved as a result of this merger.
History
Timeline
1878 - Due to land reforms, the borough of Akamaseki broke off.
*The village of 豊東前村 was renamed to become the village of Oji.
*The village of 豊東上村 was renamed to become the village of Katsuyama.
*The village of 豊東下村 was renamed to become the village of Ikuno.
*The village of 豊西東村 was renamed to become the village of Kuroi.
April 1, 1899:
*The village of 豊東郷村 was renamed to become the village of Narazaki.
*The village of 豊田奥村 was renamed to become the village of Nishiichi.
July 1, 1910 - The village of 豊西中村 was renamed to become the village of Yasuoka.
April 1, 1911 - The village of Chōfu was elevated to town status to become the town of Chōfu.
April 1, 1912 - The village of Toyotakami was renamed to become the village of Tonoi.
September 1, 1914 - The village of 豊西下村 was renamed to become the village of Kawanaka.
May 1, 1918 - The village of 神田下村 was renamed to become the village of Kanda.
January 10, 1921 - The village of Ikuno was merged into the city of Shimonoseki.
October 1, 1921 - The village of Hikoshima was elevated to town status to become the town of Hikoshima.
October 1, 1922 - The village of 豊西上村 was renamed to become the village of Yoshimi.
February 11, 1924 - The village of Nishiichi was elevated to town status to become the town of Nishiichi.
February 11, 1925 - The village of Yasuoka was elevated to town status to become the town of Yasuoka.
May 1, 1925 - The village of Kogushi was elevated to town status to become the town of Kogushi.
November 3, 1932 - The village of Ozuki was elevated to town status to become the town of Ozuki.
March 20, 1933 - The town of Hikoshima was merged into the city of Shimonoseki.
March 26, 1937 - The town of Chōfu was merged into the city of Shimonoseki.
November 15, 1937 - The town of Yasuoka, and the village of Kawanaka were merged into the city of Shimonoseki.
May 17, 1939 - The town of Ozuki, and the villages of Kiyosu, Oji, Katsuyama and Yoshimi were merged into the city of Shimonoseki.
June 1, 1953 - The town of Toyotamae was elevated to town status to become the town of Toyotamae.
March 31, 1954 - The town of Toyotamae was merged with 2 towns and 3 villages to create the city of Mine.
November 1, 1954 - The town of Nishiichi, and the villages of Tonoi, Toyotanaka and Toyotashimo were merged to create the town of Toyota.
April 1, 1955:
*The villages of Toyonishi, Kuroi, Kawatana and Uka were merged to create the town of Toyoura.
*The villages of Kamitama, Tsunoshima, Kanda, Agawa, Awano, Takibe, Tasuki, and Uka were merged to create the town of Hōhoku.
April 10, 1955 - The villages of Kikugawa, 豊東村、and Utsui were merged to create the town of Kikugawa.
November 1, 1955 - The village of Utsui was merged into the city of Shimonoseki.
July 1, 1956 - The town of Kogushi was merged into the town of Toyoura.
February 13, 2005 - The towns of Hōhoku, Kikugawa, Toyoura and Toyota were merged into the expanded city of Shimonoseki. Toyoura District was dissolved as a result of this merger.
