Zentsūji is a city located in Kagawa Prefecture, Japan. As of 1 October 2022, the city had an estimated population of 30,780 in 13096 households and a population density of 770 persons per km2. The total area of the city is 39.93 square kilometres (15.42 sq mi).

Tadotsu is a town located in Nakatado District, Kagawa Prefecture, Japan. As of 1 October 2022, the town had an estimated population of 22,124 in 10365 households and a population density of 270 persons per km2. The total area of the town is 24.39 square kilometres (9.42 sq mi).