The areas which bon toro can surely be said to have taken root are, in the east, Kure City and around Higashi Hiroshima City; in the north, Asakita Ward of Hiroshima City and around Kitahiroshima-cho; in the west, Hatsukaichi City and Otake City, and in the south, Etajima City on Etajima Island in Hiroshima Bay and islands in the Sea of Aki.
はっきり定着しているといえる地域としては、東は呉市・東広島市周辺まで、北は広島市安佐北区・北広島町周辺まで、西は廿日市市・大竹市まで、南は広島湾に浮かぶ江田島市や安芸灘の島々までが挙げられる。