Although only about 5% of young Australians are Indigenous, almost 2 in 5 (39%) of those under juvenile justice supervision on an average day in 2010-11 were Indigenous. There were 2,820 Indigenous young people under supervision on an average day and 5,195 during the year. Indigenous young people first entered supervision at younger ages than non-Indigenous young people, on average, and spent longer under supervision during the year.