Grounded in the science of early childhood development, the State of Babies Yearbook bridges the gap between science and policy by providing national and state-by-state views of how America’s babies and their families are faring, according to more than 60 indicators in ZERO TO THREE’s policy framework of Good Health, Strong Families, and Positive Early Learning Experiences. Indicators in each domain examine child and family well-being, status and reach of programs and services, and the presence or absence of key policies that are essential for healthy development. Data provided in the Yearbook can be used by policymakers, advocates, and all stakeholders in the lives of babies to identify and promote comprehensive policies that ensure all babies have a strong start and the opportunity to reach their full potential. (author abstract)