Izumo is a city in Shimane Prefecture, Japan. As of 31 July 2023, the city had an estimated population of 172,841 in 69,435 households and a …Izumo is a city in Shimane Prefecture, Japan. As of 31 July 2023, the city had an estimated population of 172,841 in 69,435 households and a population density of 280 persons per km². The total area of the city is 624.36 square kilometers.