Most of the area of present-day Ōda is located in
Iwami Province, although an eastern portion of the city was within the borders of
Izumo Province. The area was a meeting point of three ancient transportation routes: the
San'indō,
Izumo Kaidō, and the
Bingo Kaidō. As a result, numerous market towns were developed in the area. With the development of the
Iwami Ginzan Silver Mine, the area was maintained as
tenryō, or territory under the direct control of the
Tokugawa shogunate, throughout the
Edo Period. The village of Ōda within Ano District, Shimane, was established on April 1, 1889, with the creation of the modern municipalities system. Ōda was raised to town status on November 6, 1903. Ōda merged with the neighboring villages of Nagahisa, Torii, Kute, Hanehigashi, Kawai, Shizuma, and Kuri on November 1, 1954, and was raised to city status. On October 1, 2005, the towns of
Nima and
Yunotsu (both from
Nima District) were merged into Ōda. Therefore, Nima District was dissolved as a result of this merger. ==Government==