N.C.A.A. Fan Map: How the Country Roots for College Football - NYTimes.com: The most consistently loyal fans in America live in Wisconsin. More than 87 percent of fans in some Wisconsin ZIP codes support the Badgers, a level that isn't reached anywhere else, our estimates show. That's why the red in the map is so dark. Though the numbers aren't nearly so high elsewhere, Wisconsin territory also stretches into Minnesota, Iowa, Illinois and Michigan.