On October 1, 2004 the towns of Hawai and Togo and the village of Tomari (all from Tohaku District) merged to form the new town of Yurihama.
On November 1, 2004 the municipalities of Fukube and Kokufu (from Iwami District), Aoya, Ketaka and Shikano (from Ketaka District) and Kawahara, Mochigase and Saji (from Yazu District) merged into the city of Tottori.
On January 1, 2005 the towns of Mizokuchi from Hino District and Kishimoto from Saihaku District merged to form the new town of Houki in Saihaku District.