| # | Squadron | Est. |
| 1 | Calumet | 1960 |
| 2 | Chain-O-Lakes | 1962 |
| 3 | Chicago | 1945 |
| 4 | Decatur | 1961 |
| 5 | DuPage | 1970 |
| 6 | Evanston | 1953 |
| 7 | Fox Valley | 1970 |
| 8 | Illiana | 1953 |
| 9 | Illinois Valley | 1973 |
| 10 | Land of Lincoln | 1971 |
| 11 | Michigan City | 1961 |
| 12 | Mid-Illini | 1975 |
| 13 | Racine | 1964 |
| 14 | Rockford | 1962 |
| 15 | Skokie Valley | 1961 |
| 16 | Waukegan | 1957 |
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