Data are presented on juvenile arrests in 2004 (45,731) broken down by arrests for property offenses (32 percent), violent offenses against persons (26 percent), drug offenses (13 percent), and sex offenses (0.9 percent). Arrest data are also presented by race. Data for the courts cover the number of delinquency petitions (21,859); adjudications (8,535); detention (16,618 admissions); transfers to criminal court (42); and sentencing (probation, informal probation, continued under supervision, and commitments). Data on "Special Issues" pertain to arrests, detention and corrections commitments for Black youth and female youth, as well as information on mental health services in the Illinois juvenile justice system, dually involved youth (involved in both the State's child welfare and juvenile justice systems), juvenile drug courts, juvenile justice councils, restitution, community service, youth courts, and record expungement. Data are also provided on State initiatives; namely, Redeploy Illinois, a law that provides counties with funding for community-based services for nonviolent youth who would otherwise be committed to a correctional facility; and the Juvenile Detention Alternative Initiative, whose aim is to reduce the number of children unnecessarily or inappropriately detained. Data on risk factors pertain to the characteristics, experiences, or circumstances that research has shown to put youth at risk for delinquency. Data are provided on community risk factors (substance abuse treatment, poverty, unemployment, income, education, and temporary assistance to needy families); social context (correctional inmates with children, domestic violence, abuse and neglect, sexual abuse, and crimes against youth); and school context (truancy, truant minors in need of supervision, suspensions, expulsions, dropouts, and crimes against school personnel). 17 tables, 21 figures, 16 maps, and 8 appendixes with supplementary data and information