Each year since 1997, the Federal Interagency Forum on Child and Family Statistics (Forum) has published "America's Children: Key National Indicators of Well-Being," a report that includes detailed information on the well-being of children and families. This Brief highlights selected indicators from the more detailed report, which were chosen because they are easy to understand; are based on substantial research connecting them to child wellbeing; vary across important areas of children's lives; are measured regularly so that they can be updated and show trends over time; and represent large segments of the population, rather than one particular group. The first section of the Brief, Population and Family Characteristics, describes the context in which children live (including aspects such as changes in children's family settings and living arrangements). The sections that follow highlight indicators of child well-being in four key areas: Economic Security, Health, Behavior and Social Environment, and Education. (Contains 11 figures and 19 footnotes.)