Yoshinogawa is a city located in Tokushima Prefecture, Japan. As of 30 June 2022, the city had an estimated population of 39,150 in 17958 h…Yoshinogawa is a city located in Tokushima Prefecture, Japan. As of 30 June 2022, the city had an estimated population of 39,150 in 17958 households and a population density of 270 persons per km². The total area of the city is 144.14 square kilometres.