The division was part of both the American and National Conferences at different points in its history.
1995–1996 Creation of the Central Division as part of the American Conference.
Texas Terror moved in from National Conference's Southern Division.
Portland moved to American Conference's Western Division.
Milwaukee Iron as well as the second Iowa Barnstormers franchise (not to be confused with the original one known as the New York Dragons) moved in from the now-defunct AF2.
2012 Dallas suspended, Tulsa relocated to San Antonio.
After 2015, divisions were eliminated in favor of conferences due to declining team count.