Well, by that attendance figure do you mean for all games Clemson played or for home games only. The NCAA has Clemson at an average of 82,992 for 7 home games in the 2006 season. That ranked them 14th overall in the NCAA and 1st in the ACC. Click on the 'NCAA College Football Attendance Stats' link below to see the NCAA's report.
For 2012, the average attendance was 88,531
The average attendance in a football game depends on the specific game. College games typically have higher attendance than high school games.
UE does not have a football team anymore.
An average of 31,728 fans per game
borussia dortmund (2011-2012)
Borussia Dortmund with an average of 80522
football Football in TV average but Baseball by far in attendance (more than the other 3 major sports combined).