FCS Conferences: Average Age of Teams

Here are the three FCS Conferences whose teams average over 100 years of existence:

Ivy League - Average age of teams: 136.6 (oldest team: Princeton - 147)

Patriot League - Average age of teams: 123.7 (oldest team:  Lafayette - 135)

issouri Valley - Average age of teams: 109.7 (oldest teams:  Illinois State and South Dakota - 121)