Odawara is a city in Kanagawa Prefecture, Japan. As of 1 June 2021, the city had an estimated population of 188,482 and a population densit…Odawara is a city in Kanagawa Prefecture, Japan. As of 1 June 2021, the city had an estimated population of 188,482 and a population density of 1,700 persons per km². The total area of the city is 113.79 square kilometres.