On November 5, 2004, Toyomatsu, along with the towns of Jinseki, Sanwa and Yuki (all from Jinseki District), was merged to create the town of Jinsekikōgen.[1] It was the last municipality in Hiroshima Prefecture to act as a village and due to the disbanding this village, all villages have been dissolved within Hiroshima Prefecture (only the third case following Hyōgo and Kagawa Prefectures).
April 1, 1889 - The village was established. The village area includes 有木, 上豊松, 笹尾, 下豊松, 中平.
July 1, 1897 - The villages of Arugi, Kamitoyomatsu, Sasao, Shimotoyomatsu, and Nakadaira were merged to create the village of Toyomatsu.
In the mid-1950s - Toyomatsu and Yuki town had a merger discussion. but that did not come true.
November 5, 2004 - Toyomatsu, along with the towns of Jinseki, Sanwa and Yuki (all from Jinseki District), was merged to create the town of Jinsekikōgen and the village dissolved.
