The Incarceration Diversion Unit has operated out of the Lucas County Adult Probation Department (Ohio) since 1978. Only offenders given a State prison term are eligible. Each officer has 25 or fewer cases, and the supervisor has 15 cases. The program was evaluated using a quasi-experimental design with groups of offenders matched for race, gender, and risk; and measurements of costs and commitment rates between 1978 and 1983. Overall, the program has resulted in a 17-percent reduction in the number of offenders sentenced to State prisons from Lucas County between February 1978 and December 1982. The program has offset its costs and shown a savings of $901,000, including court costs and restitution paid. Other counties in Ohio could successfully copy this program, saving about $9.2 million over a 5-year period in the 5 larger counties. The program exemplifies the way community corrections can achieve the goals of probation. Tables, notes, and 11 references.