This chart was published in the Forbes magazine by Jon Bruner, and the data comes from the IRS tax stats tables.

Chart:

American Migration [Interactive Map] Close to 40 million Americans move from one home to another every year. Click anywhere on the map below: blue counties send more migrants to the selected county than they take; red counties take more than they send.

View interactive chart on Forbes website

Other aricles by Jon Bruner:

• Will Data Monopolies Paralyze the Internet? - http://www.forbes.com/sites/jonbruner/2012/04/12/will-data-monopoli...
• Five Steps For Making Data-Driven Decisions - http://www.forbes.com/sites/jonbruner/2012/04/20/five-steps-for-mak...
• Tim O’Reilly on the Future of Location: “The Guy with the Most Data Wins” -http://www.forbes.com/sites/jonbruner/2012/04/04/tim-oreilly-on-the...