Although spending time in criminogenic settings is increasingly recognized as an explanation for adolescent delinquency, little is known about its determinants. The current study aims to examine the extent to which (change in) self-control and (change in) delinquent attitudes relate to (change in) time spent in criminogenic settings, and the extent to which they mediate the effects of (change in) parenting. Time spent in criminogenic settings was measured comprehensively, by including social and physical characteristics of micro settings (200 x 200 meters). Multilevel structural equation models on two waves of panel data on 603 adolescents (aged 12-19) showed that self-control and delinquent attitudes contributed to between-person differences in time spent in criminogenic settings. Within-person increases in time spent in such settings were predicted by increased delinquent attitudes. For indirect effects, self-control partially mediated between-person effects of parenting, whereas delinquent attitudes partially mediated both between- and within-person effects.