Illinois Intercollegiate Athletic Conference Membership Membership

| Institution | Location_ | Founded | Years_in_IIAC_approx_ | Team_Nickname |
|---|---|---|---|---|
| Illinois State University | Normal, Illinois | 1857 | 1910–1970 | Redbirds |
| Bradley University | Peoria, Illinois | 1897 | 1910–1937 | Braves |
| Eureka College | Eureka, Illinois | 1855 | 1910–1942 | Red Devils |
| Hedding College (defunct) | Abingdon, Illinois | 1855 | 1910–1926 | Orangemen |
| Illinois College | Jacksonville, Illinois | 1829 | 1910–1937 | Blueboys |
| Illinois Wesleyan University | Bloomington, Illinois | 1850 | 1910–1937 | Titans |
| Lincoln College, Illinois | Lincoln, Illinois | 1865 | 1910–1928 | Lynx |
| Lombard College (defunct) | Galesburg, Illinois | 1853 | 1910–1929 | Golden Tornado/Olive |
| Millikin University | Decatur, Illinois | 1901 | 1910–1937 | Big Blue |
| Shurtleff College (defunct) | Alton, Illinois | 1827 | 1910–1937 | Pioneers/Bison |
| William & Vashti College (defunct) | Aledo, Illinois | 1908 | 1910–1917 | unknown |
| Augustana College | Rock Island, Illinois | 1860 | 1912–1937 | Vikings |