After the start of the Meiji period, the area became part of Kitaakita District, Akita Prefecture in 1878. The town of Ōdate was established on April 1, 1889 with the establishment of the modern municipalities system. During the Meiji period, the discovery of "black ore" (sphalerite and galena - a mixture of zinc, lead, gold, silver, and other precious metals), led to the development of numerous mines in the area, including the Hanaoka mine; however, the deposits were depleted by the mid-Shōwa period.