Morioka Domain
The area around Shingō was controlled by the Nambu clan of Morioka Domain during the Edo period. During the post-Meiji restoration establishment of the modern municipalities system on 1 April 1889, Herai Village and neighboring Nozawa Village were formed. On July 29, 1955 the western portion of Nozawa Village merged into Herai, which was then renamed Shingō.