South Simcoe League was an Independent League that was based in Ontario.
1923 Alliston, Barrie, Beeton, Cookstown, Ivy, Knock, Thornton
1924 Alliston, Barrie, Beeton, Cookstown, Ivy, Thornton
1925 Alliston, Barrie, Ivy, Thornton
1926 Alliston, Barrie, Ivy
1927 Alliston, Barrie, Ivy, Knock
1934 Alliston, Barrie, Beeton, Bond Head, Cookstown, Ivy, Thornton
1935 Alliston, Barrie, Beeton, Bond Head, Ivy, Thornton
1936 Not sure if this league played
1937 Barrie, Beeton, Ivy, Palgrave
1938 Barrie, Beeton, Bolton, Ivy,
1939 to 1947 Not sure if this league played
1948 Alliston, Barrie, Ivy, Stroud
1949 Alliston, Barrie, Beeton, Everett, Ivy, Plagrave, Stroud, Thornton, Utopia
1950 No teams enter or left the league
1951 Bradford, Camp Borden, Everett B team enter the league and Utopia has left the league
1952 New Lowell and Newmarket enter the league and Camp Borden has left the league
1953 Aurora and Cookstown enter the league and Everett B Team has left the league
1954 Barrie French Motors, Bolton, Churchill, and Leslie has enter the league and Aurora Bradford and Cookstown has left the league
1955 Played by with unknown Teams
1956 Alliston, Beeton, Bolton, Churchill, Everett, Ivy, Lisle, New Lowell, Palgrave, and Thornton
1957 Barrie and Stroud has enter the league
1958 Creemore has enter the league and Churchill and Palgrave has left the league
1959 Collingwood, Midland, and Utopia enter the League and Bolton, Evberett and Ivy has left the league
1960 Stayner has enter the league and Lisle and Stroud has left the league
1961 Clakrsburg, Knock and Orillia, has enter the League and Stayner has left the league
1962 Crookston and Tottenham has enter the League
1963 Played by with unknown Teams
1964 Alliston Knights, Alliston-Cookstown, Angus, Barrie, Creemore, Ivy, Midland, New Lowell, Orillia, Thornton, Tottenham
1965 Alliston-Cookstown has left the league
1966 No teams enter or left the league
1967 Alliston Canucks and Beeton has enter the league and Angus and Barrie has left the league
1968 Orillia legion and Penetang has enter the League and Alliston Knights and New Lowelll has left the league
1969 Played by with unknown Teams
1970 Alliston, Barrie, Creemore, Ivy, Orillia Juniors, Orillia Majors, Thornton, Walkertown
1971 to ???? unknown if this league is still playing.
NOTE 1 - Alliston, Barrie and Ivy played in one group and Crookston, knock, Thorton play in another group in 1926