Shichikashuku is located in the Tōhoku region of northern Japan in the far southwestern corner of Miyagi Prefecture. Surrounded by the Zaō Mountains, it is bordered by Yamagata Prefecture to the north and west, and by Fukushima Prefecture to the south. Parts of the town are within the borders of the Zaō Quasi-National Park or the Zaō Kōgen Prefectural Natural Park.