Kaminokawa is a town located in Tochigi Prefecture, Japan. As of 1 August 2020, the town had an estimated population of 31,243 in 12,061 households, and a population density of 570 persons per km². The total area of the town is 54.39 square kilometres (21.00 sq mi).

Tochigi Prefecture is a landlocked prefecture of Japan located in the Kantō region of Honshu. Tochigi Prefecture has a population of 1,897,649 and has a geographic area of 6,408 km². Tochigi Prefecture borders Fukushima Prefecture to the north, Gunma Prefecture to the west, Saitama Prefecture to the south, and Ibaraki Prefecture to the southeast.