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Families don't always look the way they used to. Two parents, two kids, one house — that picture fits fewer and fewer American households every year. Today, millions of people grow up with stepparents, half-siblings, or two sets of households that all count as home. These are blended families, and they're far more common than most people realize.

What Is a Blended Family

A blended family is a household where at least one partner brings a child or children from a previous relationship into a new family unit. The new couple may be married or cohabiting, and the household often includes children from one or both partners' prior relationships — sometimes alongside new children born to the couple together.

The term itself has been around since the 1970s, though the family structure it describes is as old as human history. Remarriage after a spouse's death was the norm for centuries. Today, the more common path involves divorce or separation, followed by a new partnership. You'll also see it called a stepfamily — the two terms are largely interchangeable, though "blended family" has become the more widely used phrase in everyday conversation.

The blended family definition hinges on one key element: children from a prior relationship are present. That's what separates it from a nuclear family or a remarried couple without kids. The blended family meaning also implies a process — two separate family histories merging into something new, with all the complexity that brings.

How a Blended F...