Kasugai (春日井市) is a city in Aichi Prefecture. As of 1 October 2019, the city had an estimated population of 306,764 and a population density of 3,306 persons per square kilometre. Its total area is 92.78 square kilometres (35.82 sq mi). The city is sometimes called Owarikasugai to avoid confusion with other municipalities of the same name, including Kasugai (now part of Fuefuki) in Yamanashi Prefecture. Kasugai is located in northwest Aichi Prefecture, north of the Nagoya metropolis, in the northern Nōbi Plain. The Shōnai River flows through the southern portion of the city.