Creates the Cook County Juvenile Temporary Detention Center Juvenile Justice Reentry Program Act. Creates a data partnership among the Cook County Juvenile Temporary Detention Center, the Illinois State Police, the Illinois Criminal Justice Information Authority, the Administrative Office of the Illinois Courts, and the Department of Juvenile Justice to annually gather the following information on the population of youth served by the Cook County Juvenile Temporary Detention Center: (1) the total number of youth served during the reporting period; (2) the recidivism rate among those youth within 6 and 12 months post-release; (3) the age range and gender breakdown of those youth, with a focus on males between 13 and 20 years of age; (4) the demographic and geographic data (race, ethnicity, and home zip codes) of those youth; and (5) the primary re-offense categories and conditions of release for those youth. Provides that the Program shall equip families with the skills, resources, and mindset to support their child's reentry. Provides that the Program shall include: (1) social worker-led home readiness assessments; (2) at-home care specialists assigned to each youth or family for 90 to 180 days; and (3) trauma-informed parenting workshops and culturally competent counseling. Provides that the Program shall provides youth released from the Cook County Juvenile Temporary Detention Center with: (1) stable, affirming housing options and near-peer support; (2) partnered transitional housing units (non-carceral); (3) resident advisor mentors between 21 to 30 years of age, with an emphasis on persons who were primarily involved in the justice system; and (4) nightly check-ins, group circles, and restorative justice practices. Provides that the Program shall equip families with the skills, resources, and mindset to support their children's reentry. Provides that the Program shall be voluntary and shall have the participation of 15 to 20 male youth between 14 to 18 years of age released from the Cook County Juvenile Temporary Detention Center within a 90-day period. Provides metrics for evaluating the effectiveness of the Program. Provides that reentry and aftercare grant funding shall be provided by the Department of Human Services.