 Kiryū annexed the neighboring village of Sakaino on April 1, 1933 and village of Hirosawa on April 1, 1937.The city expanded further with the annexation of Umeda, Aioi and part of Kawauchi village on October 1, 1954.On June 13, 2005, Kiryū absorbed the villages of Niisato and Kurohone (both from Seta District).