https://www.theatlantic.com/technology/archive/2014/09/the-geography-of-nfl-fandom/379729/?utm_source=facebook&utm_medium=social&utm_campaign=the-atlantic&utm_content=cm&utm_term=10-2018
And hopefully fans of all of those teams can work up some pity for the New York Jets, whose supporters rule… well, nowhere. No U.S. county has a plurality of Jets fans, at least on Facebook.