List of mergers in Okayama Prefecture

Here is a list of mergers in Okayama Prefecture, Japan since the Heisei era.

Mergers from April 1, 1999 to Present

On October 1, 2004 - the city of Takahashi and the towns of Ukan, Nariwa, Kawakami, and Bitchū merged to form the new city of Takahashi. As a result of this merger, Kawakami District was dissolved.

On October 1, 2004 - the towns of Kamogawa and Kayō merged to form the town of Kibichūō. The new town belongs to Kaga District, founded upon this merger.

On November 1, 2004 - the towns of Ushimado, Oku, and Osafune from Oku District merged to form the city of Setouchi. As a result of this merger, Oku District was dissolved.

On February 28, 2005 - the towns of Kamo, Shōboku, and Kume and the village of Aba from Tomata District merged into the city of Tsuyama.

On March 1, 2005 - the towns of Yoshii from Shitsuki District and Bisei from Oda District merged into the city of Ibara. As a result of this merger, Shitsuki District was dissolved.

On March 1, 2005 - the towns of Okutsu and Kagamino and the villages of Kamisaibara and Tomi from Tomata District merged to form the new town of Kagamino.

On March 7, 2005 - the towns of San'yō, Akasaka, Yoshii and Kumayama (all from Akaiwa District) merged to form the new city of Akaiwa.

On March 22, 2005 - the towns of Mitsu and Nadasaki merged into the city of Okayama. As a result of this merger, Kojima District was dissolved.

On March 22, 2005 - the city of Sōja merged with the villages of Yamate, and Kiyone from Tsukubo District to form the new city of Sōja.

On March 22, 2005 - the city of Bizen and the towns of Hinase, and Yoshinaga merged to form the new city of Bizen.

On March 22, 2005 - the towns of Chūō, Asahi, and Yanahara merged to form the new town of Misaki.

On March 31, 2005 - the city of Niimi and the towns of Ōsa, Shingō, Tessei, and Tetta merged to form the new city of Niimi. As a result of this merger, Atetsu District was dissolved.

On March 31, 2005 - the town of Hokubō from Jōbō District and the towns of Katsuyama, Ochiai, Yubara, and Kuse and the villages of Mikamo, Kawakami, Yatsuka, and Chūka (all from Maniwa District) merged to form the new city of Maniwa. As a result of this merger, Jōbō District was dissolved.

On March 31, 2005 - the town of Katsuta from Katsuta District and the towns of Ōhara, Mimasaka, Sakutō, and Aida and the village of Higashiawakura (all from Aida District) merged to form the new city of Mimasaka.

On August 1, 2005 - the town of Funao from Asakuchi District and the town of Mabi from Kibi District merged into the city of Kurashiki. Kibi District was dissolved as a result of this merger.

On March 1, 2006 - the towns of Wake and Saeki from Wake District merged to form the new town of Wake.

On March 21, 2006 - the towns of Konkō, Kamogata and Yorishima from Asakuchi District merged to form the new city of Asakuchi.

On January 22, 2007 - the municipalities of Seto of Akaiwa District and Takebe of Mitsu District merged into the city of Okayama. Akaiwa District and Mitsu District were dissolved as a result of this merger.