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.
http://chronicle.com/interactives/where-does-your-freshman-class-come-from#id=inst_214777 Chronicle of Higher Education