Offender reentry programs have proliferated since the passage of the Second Chance Act in 2008. This study examines the effectiveness of one such jail-based reentry program for male inmates diagnosed with substance dependency and who have minor children, the Delaware County (OH) Jail Substance Abuse Treatment program. This program served 34 offenders and their families over 2 years and was based on the Community Reinforcement and Family Training model, a treatment modality for substance abuse involving both operant conditioning and family-based therapy for behavioral modification. Results from a quasi-experimental design indicate that program participants were significantly less likely to be rearrested within 1 year after release relative to a comparison group of similarly situated offenders and more likely to comply with child support orders following release. Findings also revealed the treatment group had significantly more days to failure for those who did recidivate.