Saitama is the capital and the most populous city of Saitama Prefecture in Japan, situated in the south-east of the prefecture. Its area incorporates the former cities of Urawa, miya, Yono and Iwatsuki. It is a city designated by government ordinance. Being in the Greater Tokyo Area and lying 15-30 kilometres north of central Tokyo, many of its residents commute into Tokyo. The city was founded on May 1, 2001, and was designated on April 1, 2003 as a government ordinance. For the histories of Urawa, miya and Yono before the merger, see Urawa-ku and Saitama, miya-ku and Saitama and Yono and Saitama, respectively. The city is located 20 to 30 km north of central Tokyo, roughly at the center of the Kant Plain. Within Saitama Prefecture, the location corresponds to the southeastern portion bordered by Ageo City, Hasuda City, and Shiraoka Town to the north; Asaka City, Kawaguchi City, Toda City, and Warabi City to the south; Koshigaya City to the east; Kasukabe City to the northeast; and Kawagoe City, Shiki City, and Fujimi City to the west.