This study estimates that Arizona receives $1.87 in benefits for every $1 collectively invested in evidence-based early childhood home visitation programs. The analysis was implemented by the Seidman Research Institute, in association with the Morrison Institute for Public Policy, both at Arizona State University. The study was funded through the Maternal, Infant and Early Childhood Home Visiting (MIECHV) grant1 and is part of an ongoing effort to build an effective and long-lasting early childhood health and development system that will make it easier for families to raise young children to achieve their fullest potential. Seven evidence-based early childhood programs administered by the state of Arizona are included in the study: Early Head Start, Family Spirit, Healthy Families Arizona, Healthy Steps, Nurse-Family Partnership, Parents as Teachers, and SafeCare Augmented. In 2014, 10,971 families participated in these seven programs, at a combined cost of $37,465,605. To estimate the combined return on investment for all seven programs, the research team utilized the latest estimates of total benefits and total costs by program. Monetization of total benefits is drawn from a comprehensive review of national studies maintained by the Washington State Institute for Public Policy (WSIPP). To estimate the total costs of participation, Arizona-specific cost data from 2014 is sourced from the three agencies and extrapolated based on the average duration of each program. The study concludes that the benefits of implementing evidence-based early childhood home visitation programs in Arizona significantly outweigh the costs.