Throughout the 4-year period Queensland (194–290 young people each quarter) and New South Wales (172–289) had the largest number of young people in detention. This was followed by Victoria (109–198), and Western Australia (88–152) (Figure 5.1). Since the September quarter 2020, Queensland has had the largest number of young people in detention on an average night.
The size of the youth detention population fell in New South Wales, Victoria, Western Australia, and South Australia from the June quarter 2018 to the June quarter 2022. In Tasmania the number of young people in youth detention was small, but down slightly compared to the June quarter 2018 (Figure 5.1).
In Queensland and the Northern Territory, there was an increase in the number of young people in detention from the June quarter 2021 to the June quarter 2022 (Figure 5.1).
In the Australian Capital Territory, the number of young people in youth detention was small, but up slightly compared to the June quarter 2018 (Table S11).