NFL teams' most rabid fans, in one county-by-county map - Vox
The Geography of NFL Fandom - The Atlantic
Facebook showcases NFL fandom across the U.S.
Amazing Maps of the Sports World
X-Post from /r/nfl) This map makes me feel so vindicated as a York County, PA Ravens fan. Ravens own Central PA. : r/ravens
James Island Charter - Team Home James Island Charter Trojans Sports
Amazing Maps of the Sports World
NFL Fan Map: Favorite Team by County
Public Transportation - University of Washington Athletics