This report provides available data, presented in 64 tables, describing the incidence and prevalence of congenital disabling conditions among children and the characteristics of disabled children and youth and their caretakers. The data cover children living in United States households, institutions and other group quarters, and children participating in public education programs. Part I of the report details significant highlights of the data such as that there has been little change in the incidence of birth defects in the past decade, that about 4.2% of children have chronic activity limitations, that most of the children living in group quarters are teenagers, and that 11.2% of children in Head Start programs are handicapped. Part II contains a discussion of factors that bear on the validity and reliability of childhood disability statistics and the associated utility and limitations of these statistics. The 64 tables are presented in the third section. Part IV provides background information on the data collection efforts from which the data tables were derived. Information is included on the name, sponsor, and contact person for the file; survey period; survey objective; survey population; survey size; survey design; data source; and prior use reports. The report's fifth section is a selected, partially annotated bibliography which cites over 150 books, journal articles, manuals, and studies on the incidence and prevalence of childhood disability and on methodology. (CB)