The Family Map is a semistructured interview developed to assess important aspects of the family and home environment associated with well-being in 3- to 5-year old children. The measure is designed so that it can be used during home visits with Head Start families. Accordingly, it was developed in collaboration with Head Start providers and families. The Family Map systematically identifies areas of concern and strength so that providers can design interventions to reduce risk factors (e.g., food insecurity, physical safety issues, family conflict, harsh parenting practices, parental depression) or enhance factors associated with healthy development (e.g., availability of learning materials in the home, good monitoring and supervision, or home safety). The areas assessed by the Family Map are targeted by Head Start performance standards. The Family Map has been successfully implemented in Head Start agencies and is also being adopted in non-Head Start early childcare settings. (Contains 2 tables and 3 figures.)