More adults are living in shared households, according to the U.S. Census Bureau's "Poverty and Shared Households by State: 2011" report.

In 2011, 17.9 percent of people over the age of 18 were living in someone else's household, up from 16 percent in 2007, before the economic recession hit. Specifically, 41.2 million adults in 2011 lived in a household in which they were not the householder, the householder's spouse or the householder's cohabiting partner, the report said. Between 2010 and 2011, the number of these additional adults increased by 1.9 million, from 17.3 percent to 17.9 percent of adults.

In 2007, prior to the start of the economic recession, 19.8 million or 17.6 percent of households were shared. Nationally, shared households peaked in 2010 at 22.2 million or 19.4 percent of all households and declined to 22 million or 19.2 percent of households in 2011.