Island (pop., 1996: 4,118), South Australia.
Located at the entrance to the Gulf St. Vincent, southwest of Adelaide , Kangaroo Island is 90 mi (145 km) long with an area of 1,680 sq mi (4,350 sq km). Visited in 1802 by the English explorer Matthew Flinders , it was named for its many kangaroos. Nepean Bay was the site of the state's first settlement in 1836.