Tokorozawa (所沢市, Tokorozawa-shi) is a city located in Saitama Prefecture, Japan. As of 1 February 2021[update], the city had an estimated population of 344,194 in 163,675 households and a population density of 4800 persons per km². The total area of the city is 72.11 square kilometres (27.84 sq mi).
Tokorozawa is located in the central part of the Musashino Terrace in southern Saitama, about 30 km west of central Tokyo. Tokorozawa can be considered part of the greater Tokyo area; its proximity to the latter and lower housing costs make it a popular bedroom community. The Higashikawa and Yanasegawa rivers that flow from the Sayama Hills flow to the eastern part of the city, and finally reach the Arakawa River. The Yamaguchi Reservoir (commonly known as Lake Sayama) is mostly located within city boundaries; Lake Tama also touches the south-western part of the city.
The area around Tokorozawa Station's west exit is built up as a shopping district with several department stores. Prope Street is a popular shopping arcade.