The Brady Bunch cast, circa 1970. (Michael Ochs Archives/Getty Images) When people think of “blended families,” they might think of something like “The Brady Bunch”– when two people marry and each bring in children from a past relationship. But that’s just one type of blended family. The term refers to any family that includes a stepparent, stepsiblings and/or half siblings . Some 17% of U.S. children younger than 18 live in a blended family. This figure is based on family members that children live with most or all of the time. It’s important to note that some children may have blended family members who are not accounted for, like a stepsibling who lives in another household or an older half sibling who has moved out. Here are five facts about blended families, based on a Pew Research Center analysis of data from the U.S. Census Bureau. About this research This Pew Research Center analysis looks at the share of children living in blended families in the United States and what these arrangements look like.…