Tri-State Conference (1960–1978)

Football champions

• 1960 – Concordia
• 1961 – Midland
• 1962 – Concordia and Dana
• 1963 – Midland
• 1964 – Westmar
• 1965 – Midland Lutheran and Westmar
• 1966 – Westmar and Yankton
• 1967 – Westmar
• 1968 – Westmar
• 1969 – Yankton
• 1970 – Unknown
• 1971 – Northwestern
• 1972 – Unknown
• 1973 – Northwestern
• 1974 – Northwestern
• 1975 – Bethel, Northwestern, and Yankton
• 1976 – Northwestern
• 1977 – Unknown
• 1978 – Northwestern