Shingū is a town situated in the Kasuya District of Fukuoka Prefecture, Japan. It covers a total area of 18.93 km² (7.31 sq mi) and encompasses the island of Ainoshima.
As of February 29, 2024, the town had an estimated population of 33,142 residents living in 13,664 households. The area maintains a population density of approximately 1,800 persons per km².