In Australia, around 7,250 young people were under juvenile justice supervision on any given day in 2009-10. These young people spent, on average, a total of 6 months under supervision during 2009-10. Most (86%) were under community-based supervision, with the remainder in detention, and almost half of those under supervision in 2009-10 had never been in detention. This report presents information on the characteristics of young people under community-based supervision and in detention and the type and length of their supervision.