In 2011, 7.7 million children in the U.S.–one-in-ten–were living with a grandparent, and about 3 million of those children were being cared for primarily by that grandparent. Both of these numbers rose rapidly after the onset of the recession in 2007 and have stabilized since 2009, when the recession officially ended, according to a new Pew Research Center analysis of U.S. Census Bureau data. Read more.