The number and share of Americans living in multi-generational households rose for all age groups from 2007 to 2009. The sharpest growth was among adults ages 25 to 34 –8.7 million members of this group lived in multi-generational households in 2009 compared with 7.4 million in 2007. Both the numerical growth (about 1.3 million people) and the percentage increase it represents (16.8%) were larger than for any other age group. The share of these adults in multi-generational households rose to 21.1% in 2009 from 18.7% in 2007 — this 2.4 percentage point increase was again larger than for any other age group.

The profile of adults ages 25 to 34 living in multi-generational households differs from the overall population of Americans who do so. Most notably, they are much more likely to live in two-generation households — usually those of their parents — than in other types of multi-generational households. Six-in-ten people in this age group (62.0%) do so, compared with slightly less than half (46.8%) of the total population of people living in multi-generational homes. Read More

Russell Heimlich  is a former web developer at Pew Research Center.