For over a decade, national research has shown that many disadvantaged youth and families experience both homelessness and involvement in child welfare services. However, prior to the research summarized here, no population-based research had examined systematically the extent and dynamics by which children and youth experience both of these service systems. This white paper for the New York City Administration for Children\u27s Services (ACS) provides a summary of three studies that looked carefully at how these two important social welfare systems have shared a population, and how our improved understanding of these intersecting systems of care can promote better outcomes and improved quality of life for children and youth