Published back in April of this year, the U.S. Census Bureau offers up some information and analysis of adopted children and stepchildren (and their families).
As Rose M. Kreider and Daphne A. Lofquist write in their U.S. Census Bureau Population Characteristics piece entitled Adopted Children and Stepchildren: 2010, “Children live in a variety of family configurations. The type of relationship between children and their co-resident parents reflects the way the family was formed. A parent’s remarriage or re-partnering may result in a child living with a stepparent. Other parents may build their families through adoption. Ninety-five percent of children under 18 live with one or two biological parents, but children may also live with adoptive parents or stepparents.”
In addition to a host of statistical information (some of which is state-specific), you’ll also find extensive data analysis, thorough explanations and definitions of the individual groups/populations examined in the piece, and a summary statement regarding the data as a whole.