The State of Babies Yearbook: 2023 can be used as a guide to help every baby get a strong start in life. By using the data and insights provided, policymakers can set priorities and take action to create a more equitable and promising future for all babies and families across the nation. The State of Babies Yearbook includes a complete demographic profile of the nation’s infants and toddlers, including their race and ethnicity, poverty level and family income, family structure, parental work status and urbanicity. These characteristics aid in analyzing the implications of the Yearbook indicators. As in previous editions, the Yearbook uses key indicators to rank states in four GROW tiers—Getting Started, Reaching Forward, Improving Outcomes and Working Effectively—based on how babies are faring and the presence of responsive policies. GROW rankings, together with the state profiles, help compare the progress across states in creating more equitable opportunities for babies and families. (author abstract)