31. Cincinnati BengalsĀ (Average Attendance: 51,637)
The Cincinnati Bengals are not having a great season, in which they have lost seven of their last eight games. The Bengals are only filling up 79% of their stadium on average this year, which may be tied to the lack of production on field.
Then again you have to be sympathetic to Bengals fans, because they have been sticking their fortunes to head coach Marvin Lewis and quarterback Andy Dalton for way too long. It is time for the Bengals to move on and start over and their fan base should welcome those changes.