Family moving house sitting with a baby
Oliver Marquardt Family moving house sitting with a baby

Although it was common in much of the 19th and early 20th centuries, extended families living together became less so following the post-World War II baby boom. Now, due to a combination of economic, cultural, and social forces, a growing share of American households has three or more generations of the same family living under the same roof, reports Aaron Terrazas of Zillow Research.

In 2015, 3.2% of households were multigenerational, compared to 2.6% in 2006

Extended families are increasingly driven to live together in part as a way of easing housing affordability, and it is also a much more common phenomenon among rapidly growing Asian and Hispanic households.

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