For the report, WalletHub looked at more than 244 cities in the country with “at least one college or professional team.” Researchers used 21 key metrics that included average ticket price for an NFL game, attendance, stadium accessibility and football fan engagement. The study used information from the U.S. Census Bureau, ESPN, Forbes and the NCAA. Each metric was graded on a 100-point scale, with the score of 100 representing the most favorable conditions for fans.