Kokubunji (国分寺市, Kokubunji-shi) is a city located in Tokyo Metropolis, Japan. The city was founded on November 3, 1964.As of June 1, 2008, the city has an estimated population of 117,335, with 55,459 households and a population density of 10,057 persons per km². The total area is 11.48 km².