NFL Fan Bases: Ranking NFL Fan Bases by Attendance

5. Denver Broncos (Average Attendance: 76,504)

The Denver Broncos have one of the best fan bases in the NFL, with nearly 80,000 fans piling in to Mile High Stadium for every home game.

Unfortunately for Broncos fans, there has not been much to cheer about over the past few years. The Broncos have not made the playoffs since 2015, although they did win Super Bowl 50 that year.