Information on the population and characteristics of public (through 1984-1985) or public and private (1986-1987 and beyond) juvenile facilities in operation in the United States each February. Annual data for the previous calendar year are included as well. Residential programs and group homes were included in the census if they housed three or more residents, if at least 50% of the residents were juveniles, and if accused or adjudicated delinquents and status offenders were at least 1% of their average daily population. In California, however, all California Youth Authority Facilities were included in the census. Juvenile facilities operated as part of adult jails were excluded, as were nonresidential facilities, facilities exclusively for drug or alcohol abusers or nonoffenders, and federal juvenile correctional facilities.