On October 1, 2004 - the town of Kayō, along with the town of Kamogawa (from Mitsu District), was merged to create the town of Kibichūō. The new town belongs to the newly created Kaga District, founded upon this merger.
^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. 147. Hokubo-cho, Katsuyama-cho, Ochiai-cho, Yubara-cho, Kuse-cho, Mikamo-son, Kawakami-son, Yatsuka-son and Chuka-son were incorporated into a newly established Maniwa-shi as of March 31, 2005.