Over 530,000 children are in foster care in the United States, living in a variety of settings, including non-relative foster homes, the homes of relatives, and group homes. However, little research has been available to provide a national picture of the circumstances in which these children reside. The National Survey of Child and Adolescent Well-Being (NSCAW) presents a unique profile of the experiences of children in foster care in the United States. Focusing on a national sample of children in foster care for one year, it provides a portrait of foster caregivers and foster caregiving environments, as well as the perceptions that children themselves have about their foster caregivers and their experiences in foster care. This research brief provides a portrait of those taking care of foster children in our country, the environments in which these children are being cared for, the children's perceptions about their caregiving arrangements, and the plans for reunification of this population. The NSCAW data reveal some favorable findings, such as the positive feelings that children express toward their foster parents and families, particularly those children in kinship care. However, the findings also highlight some issues for future consideration, such as the frequency of children's family visits, the large household size in non-kin foster homes, the relatively low educational and economic status of both kin and non-kin caregivers, and the less positive perceptions of caregiving environments expressed by children in group care. This is the second in a series of NSCAW research briefs, developed by Caliber Associates from the Baseline Report, focused on children in foster care who come into contact with the Child Protective System. (Contains 7 figures.)