Ichinomiya (一宮市, Ichinomiya-shi) is a city located in Aichi Prefecture, Japan. The city is sometimes called Owarichinomiya to avoid confusion with other municipalities of the same name, including Ichinomiya (now part of the city of Toyokawa), Ichinomiya in Chiba Prefecture. As of 1 October 2019, the city had an estimated population of 379,654 in 161,434 households, and a population density of 3,336 persons per km². The total area of the city was 113.82 square kilometres (43.95 sq mi).