Minamiawaji is a city located in the southern part of Awaji Island in Hygo Prefecture, Japan. The city was formed on 11 January 2005 from the merger of all four towns of the former Mihara District: Mihara, Midori, Nandan and Seidan. Minamiawaji also includes the island of Nushima, which is a small island off the Southeast coast of Awaji Island, and is only accessible by ferry. As of 30 April 2008, the city has an estimated population of 52,888. The total area is 229.17 Square kilometers. Minamiawaji's soil and climate make it ideal for growing onions. As such, Awaji onions are renowned across Japan as sweet and delicious.