“A record 57 million Americans, or 18.1% of the population of the United States, lived in multi-generational family households in 2012, double the number who lived in such households in 1980. After three decades of steady but measured growth, the arrangement of having multiple generations together under one roof spiked during the Great Recession of 2007-2009 and has kept on growing in the post-recession period, albeit at a slower pace, according to a new Pew Research Center analysis of U.S. Census Bureau data. Young adults ages 25 to 34 have been a major component of the growth in the population living with multiple generations since 1980—and especially since 2010. By 2012, roughly one-in-four of these young adults (23.6%) lived in multi-generational households, up from 18.7% in 2007 and 11% in 1980. Historically, the nation’s oldest Americans have been the age group most likely to live in multi-generational households. But in recent years, younger adults have surpassed older adults in this regard. In 2012, 22.7% of adults ages 85 and older lived in a multi-generational household, just shy of the 23.6% of adults ages 25 to 34 in the same situation.”