On the subject of the migration of college freshmen, two things are clear: Most stay within their home state's borders, and the rest tend to go to private colleges in neighboring states. It’s already known that more than a third of freshmen stay within 50 miles of home, but what the interactive map clearly shows is that even those who stray beyond tend to stay in the region.
Read more at The Chronicle of Higher Education: http://chronicle.com/interactives/where-does-your-freshman-class-come-from