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| Conference | IHSA |
|---|---|
| Founded | 1927 |
| No. of teams | 10 |
| Region | North Central Illinois (LaSalle, Livingston, Marshall, Putnam, and Woodford counties) |
The Tri-County Conference is a high school conference in north central Illinois. The conference participates in athletics and activities in the Illinois High School Association. The conference incorporates 8 small public and 2 small private high schools, with enrollments between 82-428 students in LaSalle, Livingston, Marshall, Putnam, and Woodford counties.