佐竹氏
The area of present-day Hachirōgata was part of ancient Dewa Province, dominated by the Satake clan during the Edo period, who ruled Kubota Domain under the Tokugawa shogunate. The village of Omogata was established in 1889 with the establishment of the modern municipalities system, the town of Hitoichi in 1925. The two merged in 1956 to form the town of Hachirōgata. Efforts to merge the town with neighboring Gojōme and Ikawa failed to pass a referendum in 2005.