Approximately 12.5 percent of Americans moved in 2010-2011 according to the United States Census Bureau.

A 2010 survey by the bureau reveals the motive for people to move.

Nearly 44 percent of the people said the main reason for moving was housing-related, 30 percent moved for family reasons and 16 percent moved due to employment and the remaining participants relocated for "other" reasons.

Take a look at the story from the Census Bureau which includes a nice graph.