The area of the modern city of Shingū was within ancient
Kii Province, and per the
Nihon Shoki was the home of the
Kumano Kuni no miyatsuko, a local king ruling the
Kumano region which straddles what is now southern Wakayama and Mie prefectures. The settlement had prospered since before the
Kamakura period as a timber distribution center using the Kumano River, and as an entrance to the
Kumano Sanzan shrines. During the
Edo period, it was part of the holdings of the
Kii Tokugawa clan, and was the
castle town of the
Shingū Domain during the
Edo period. After the
Meiji restoration, the area became part of the
Higashimuro District, Wakayama, and the town of Shingū was established with the creation of the modern municipalities system on April 1, 1889. Shingū and the neighboring town of Miwasaki merged to form the city of Shingū on October 1, 1933. Shingū annexed the village of Takeda on September 30, 1956. On October 1, 2005, the town of
Kumanogawa (from
Higashimuro District), an
exclave between
Nara and
Mie prefectures, was merged with Shingū. ==Government==