This brief provides a descriptive picture of Head Start children and families who experience homelessness and the kinds of services Head Start programs offer them. In this brief, "homeless" includes those who are literally homeless (living on streets, in cars, in shelters, or in other places not meant for habitation), as well as those who are "doubled-up" (multiple families share a unit intended for a single family due to economic hardship, loss of housing, or a similar reason). Data sources include the Head Start Program Information Report (PIR) and the 2009 cohort of the Head Start Family and Child Experiences Survey (FACES 2009). (author abstract)