The Tri-County Conference (not to be confused with conferences of the same name located in the northern and southern portions of the state) was a high school sports league that existed until the late 1960s. Originally the Sullivan County Conference, the SCC added L&M and Midland from the folding Greene County Conference, then assumed the TCC name when Cory from Clay County was added two years later. The league was hit hard by consolidation that next year, and had three members for two more years until Cory was closed.

SchoolLocationMascotColorsYear joinedPrevious conferenceYear leftConference joined
CarlisleCarlisleIndians<1932Independents1965none (consolidated into Sullivan)
Dugger1DuggerBulldogs<1932 1958Independents Western Indiana1950 1965Western Indiana Tri-River
FairbanksFairbanksTrojans<1932Independents1957none (consolidated into North Central (F'burg))
FarmersburgFarmersburgPlowboys<1932Independents1957none (consolidated into North Central (F'burg))
GraysvilleGraysvilleGreyhounds<1932Independents1962none (consolidated into Sullivan)
HymeraHymeraShakamaks<1932Independents1965none (consolidated into North Central (F'burg))
MeromMeromBeavers<1932Independents1953none (consolidated into Gill Township)
New LebanonNew LebanonTigers<1932Independents1953none (consolidated into Gill Township)
PleasantvillePleasantvilleBlue Streaks<1932Independents1965none (consolidated into Union (Dugger))
ShelburnShelburnPanthers<1932Independents1957none (consolidated into North Central (F'burg))
SullivanSullivanGolden Arrows<1932Independents1936Southern Indiana
Gill TownshipMeromRockets1953none (new school)1957none (consolidated into Sullivan)
North Central (Farmersburg)FarmersburgThunderbirds1957none (new school)1967Independents (TRC 1977)
L & MMarcoBraves1961Greene County1967Independents (SW IN 1968)
MidlandMidlandMiddies1961Greene County1964none (consolidated into Shakamak
CoryCoryApple Boys1963Clay County1967none (consolidated into Clay City)
  1. Dugger changed its name to Union in 1965.