The purpose of this project is to improve understanding of the degree to which child care centers accepting subsidies serve demographically diverse populations of children. A key goal of the federal Child Care and Development Fund (CCDF) is to provide subsidies for families from low income and underserved backgrounds. This is seen as a way to support more equitable access to high quality care. Because demand for CCDF subsidies outstrips the number of available slots, it has been necessary to further prioritize which children and families are served. Priority groups identified in the federal CCDF reauthorization include children with special needs and those experiencing homelessness. State CCDF policies further determine which specific families will qualify and set details such as provider reimbursement rates and family copayment rates. These policy decisions are likely to have further implications for which centers participate in the subsidy system and which families enroll. Yet, our understanding of child diversity in centers accepting subsidies is incomplete. This study leverages data from two recent national datasets — the 2019 National Survey of Early Care and Education (NSECE) and the 2018 CCDF Policies Database — and will address a set of research questions related to child demographic diversity and how this relates to centers’ subsidy participation. Our secondary analysis will be organized around four phases. (author abstract)