Facebook data give us the best fandom map of the NCAA Tournament

Indiana, the mecca of amateur basketball, gets the clean sweep: all 92 of its counties went Hoosiers. In Illinois, only tiny and traitorous Alexander County at the very southern tip of the state went against the Illini, supporting Indiana instead. The University of Wisconsin lost six counties to Marquette, The University of Michigan lost just seven(!) to Michigan State, OSU lost four to Cincinnati and Akron, plus a surprising six more to rival Michigan, and Louisville lost five to WKU.

deadspin.com