Hidaka is a town located in Hidaka District, Wakayama Prefecture, Japan. As of 30 November 2021, the town had an estimated population of 7,970 in 3266 households and a population density of 170 persons per km². The total area of the town is 46.19 square kilometres (17.83 sq mi).

Hirogawa is a town in Arida District, Wakayama Prefecture, Japan. As of 30 November 2021, the town had an estimated population of 6,778 in 2833 households and a population density of 100 persons per km2. The total area of the town is 65.33 square kilometres (25.22 sq mi).