Susami is a town in Nishimuro District, Wakayama Prefecture, Japan. As of 31 October 2021, the town had an estimated population of 3,709 in 2041 households and a population density of 21 persons per km2. The total area of the town is 174.45 square kilometres (67.36 sq mi).

Kozagawa is a town located in Higashimuro District, Wakayama Prefecture, Japan. As of 1 November 2021, the town had an estimated population of 2,537 in 1415 households and a population density of 8.6 persons per km². The total area of the town is 294.23 square kilometres (113.60 sq mi). The total area of Kozagawa is the second largest in Wakayama Prefecture. However, the population of Kozagawa Town is the second smallest in the prefecture.