The city of Sumoto occupies the middle of Awaji Island, sandwiched between Awaji and Minamiawaji. with the Gulf of Harima on the Seto Inland Sea to the west and Osaka Bay to the east. The Sumoto River flows into Osaka Bay in the center of the city area, part of which are within the borders of the Setonaikai National Park
Sumoto has a mayor-council form of government with a directly elected mayor and a unicameral city council of 18 members. Sumoto contributes one member to the Hyogo Prefectural Assembly. In terms of national politics, the city is part of Hyōgo 9th district of the lower house of the Diet of Japan.
Economy
The local economy is largely rural, and is based on agriculture and commercial fishing. Sumoto has traditionally been famous for its production of Awaji onions, Naruto oranges and Kobe Beef.
Education
Sumoto has 13 public elementary schools and five public middle schools operated by the city government and two public high schools operated by the Hyōgo Prefectural Department of Education. The city also operates one combined elementary/middle school. There are also one private combined middle/high school.
Jointly with Minami Awaji and Awaji, the city operates a low-cost electric bike rental scheme, designed to attract visitors to stay for more than one day in order to explore the island.[5]