On March 1, 2006, the towns of Miyoshi and Mikamo from Miyoshi District merged to form the new town of Higashimiyoshi.
On March 31, 2006, the towns of Kainan, Kaifu and Shishikui from Kaifu District merged to form the new town of Kaiyo.
Tokushima's prefectural symbol is a stylized combination of the hiragana for to and ku, the first two characters in the hiragana spelling of the prefecture's name.