Notable declines in youth offending have been observed internationally, including in the United States, United Kingdom, European countries, and Australia. The causes of the decline remain disputed; however it has been proposed that changing crime control responses to young people are likely to have played a role in this decline. This study examines this proposition, specifically that increased police-led diversion of young people has played a role in the Australian youth crime decline. Drawing on criminal justice data for 121,887 young people across multiple cohorts (young people born in 1994/95, 1997/98 and 2001/02) and multiple jurisdictions in Australia (New South Wales, Victoria and Queensland), this study finds overall major reductions in the number of low-level youth offenders from older to more recent cohorts, and small growth in chronic youth offending. Regression analysis suggests that rather than increasing, exposure to police-led diversion has decreased for more recent cohorts of young people. Findings support previous empirical work on the positive effects of police-led diversion for young people, with a higher probability of diversion within the first three offences associated with low to moderate offending patterns from ages 10 to 17, rather than chronic offending patterns, and a significantly lower volume of offending.