Hiroshima Prefecture is a prefecture of Japan located in the Chūgoku region of Honshu. Hiroshima Prefecture has a population of 2,811,410 and has a geographic area of 8,479 km2. Hiroshima Prefecture borders Okayama Prefecture to the east, Tottori Prefecture to the northeast, Shimane Prefecture to the north, and Yamaguchi Prefecture to the southwest. Hiroshima Prefecture also borders Ehime Prefecture for 74 metres (243 ft) on Hyōtanjima.