This part of the study looks at police-reported incidents involving youth — it does not count the number of youth accused of a criminal offence.1 Thus, for the purposes of this study, youth crimes (also herein referred to as ’incidents of youth 1. The focus in the first section of the study is on the criminal incident. [...] The day-time population includes youth (aged 5 to 17) who attended a school in the CT in 2006/2007 according to data provided by the Ministry of Education, or the population working in the CT for models on adult crime.7 Subway traffic represents the number of persons who passed through the subway stations in the CT in 2007, based on data released by the Toronto Transit Commission. [...] The results of the second model show that the number of incidents of adult crime in commercial establishments is strongly associated with the number of youth crime incidents in these same establishments. [...] This association may be related to the fact that many of these crimes are committed in the residence of the accused youth, the victim (48% of the victims of accused youth in private residences were themselves young) or of a friend of the accused youth. [...] The results of the regression models show that the characteristics of the neighbourhoods where the youths live are more strongly associated with the rates of youth accused (Table 8) than are the characteristics of the neighbourhoods where they committed crimes (Tables 2, 3 and 6).