Tsumagoi is a village located in Agatsuma District, Gunma, Japan. As of September 1, 2007, the village has an estimated population of 10,743 and a density of 31.19 persons per Square kilometer. The total area is 337.51 Square kilometers. The village is situated on the northwestern corner of Gunma prefecture, touching Nagano prefecture to the north, south, and west. Because of its elevated location and the ash deposits of Mount Asama, Tsumagoi is fit and well known for growing cabbages. It has a cool climate, with an average yearly temperature of 8. There are two train stations on the Agatsuma Line in Tsumagoi: Manza-Kazawaguchi and mae.