Ōme is a city located in the western portion of Tokyo Prefecture, Japan. As of 1 May 2023, the city had an estimated population of 131,128, and …Ōme is a city located in the western portion of Tokyo Prefecture, Japan. As of 1 May 2023, the city had an estimated population of 131,128, and a population density of 1300 persons per km². The total area of the city is 103.31 square kilometres.