This report presents results from the 2004 National Survey of Substance Abuse Treatment Services (N-SSATS), an annual census of facilities providing substance abuse treatment. Conducted by the Substance Abuse and Mental Health Services Administration (SAMHSA), the N-SSATS is designed to collect data on the location, characteristics, and use of alcoholism and drug abuse treatment facilities and services throughout the 50 states, the District of Columbia, and other U.S. jurisdictions.