This report provides national and cross-state profiles of the characteristics of center-based day care and presents estimates of the degree to which centers are currently in compliance with the major provisions of government day care regulations. The information presented here was compiled as part of the Supply Study, a project of the National Day Care Study conducted by the Day Care Division of the Administration for Children, Youth, and Families. Data were collected by a telephone survey of a national probability sample of 3,167 day care centers. (More than one out of every six day care centers in the United States participated in the survey.) A small national probability sample of 70 centers, all of which had participated in the telephone interviews, was surveyed by means of personal on-site interviews. The report is divided into 3 parts. Part I presents background information, an overview of the study, and a summary of findings. Part II consists of detailed statistical tables which present data on center characteristics, children and families, programs, staff, finances, and regulatory compliance. Part III contains the appendices. Appendix A describes the sampling design, survey implementation, estimation techniques, and reliability. Appendix B presents a copy of the questionnaire used for the telephone survey and describes its development. (JMB)