Minamiawaji is a city located in the southern region of Awaji Island within the Hyōgo Prefecture of Japan. The municipality covers a total land area of 229.01 square kilometers (88.42 square miles).
As of June 1, 2022, the city had an estimated population of 45,489 residents living in 19,856 households. The population density for the area is recorded at 200 persons per square kilometer.