Among the 2,691 adults surveyed by the Pew Research Center from October 1-21, 2010, 42% say they have at least one step relative. Three-in-ten have a step or half sibling, 18% have a living stepparent, and 13% have at least one stepchild.1
Having a stepfamily is not something most people anticipate or plan for, and that is reflected in the survey findings. When asked whether their family life has turned out about as they expected or if it is different than they expected, a 54% majority of those who have at least one step relative say things have turned out differently than they expected. This compares with only 41% of those who have no step relatives.