Homelessness is a traumatic experience with long-term consequences, particularly for infants and toddlers in their most critical stages of development. Yet homelessness among young children is hidden. Lack of shelter, fear of having children removed from parental custody, and restrictive eligibility criteria for housing programs mean that most young children experiencing homelessness stay in places that are not easily identified. To date, the only data on the number of young children experiencing homelessness is from the U.S. Department of Education, which estimates that approximately 1.3 million children under the age of six experienced homelessness in 2018-2019. However, these data are not disaggregated by age, and, therefore, the prevalence of homelessness amongst the very youngest -- infants and toddlers -- has thus far been unknown. In order to prevent longer term impacts, awareness and action must be increased to support expecting parents, as well as infants and toddlers experiencing homelessness. A first step in doing so is understanding the prevalence of homelessness in this age range, and the gaps in their access to high-quality early learning programs. This report describes the prevalence of homelessness among infants and toddlers in twenty states that have formed broad-based coalitions to move prenatal-to-3 priorities forward; gaps in access to early learning programs; and recommendations for increasing enrollment and support.