This report describes profiles of 535 clients who participated in a federally-funded drug user treatment research demonstration program in Washington, D.C. The majority of clients were African-Americans (92%) and single (60%). These profiles were created to determine which types of clients were enrolled in which modalities and whether there were differences between clients placed in outpatient or residential programs after stratification by primary drug problem: heroin or cocaine. Localities which are involved in developing client placement criteria and/or managed care guidelines for treatment programs may find these profiles helpful in planning to address the multiple needs of drug users.