College Football Fan Map (Published 2014)
Fans of 82 teams by ZIP code, as based on Facebook ‘likes’.
www.nytimes.com
This map displays "likes" on facebook for certain teams. This might/ probably more directly measure certain demographics percent interaction with facebook rather than actual fandom, but its interesting to see that outside of the region outside of Pullman the mutts garner more "likes" than WSU. I would have thought that by any metric WSU would outrank UW in the Tri-Cities and Spokane regions as well.