Ōita is the capital city of Ōita Prefecture located on the island of Kyūshū, Japan. Ōita is the most populous city in Ōita Prefecture. As of 2008, the city has an estimated population of 467,267 and a population density of 932 persons per km². The total area of the city, after the merger with Town of Notsuharu and Town of Saganoseki on January 1, 2005, is 501.25 km². The city is bordered by City of Beppu to the northwest, City of Yufu to the west, City of Taketa to the southwest, City of Bungo-ōno to the south, and City of Usuki to the southeast. The north of the city faces the Seto Inland Sea.