It serves the local Father John Redmond Catholic Secondary School.
St. Teresa Church was formed out of St. Leo's, Mimico 1924[1] to serve the Town of New Toronto.
Christ the King Roman Catholic Church, Long Branch was formed out of St. Theresa's in 1939 to serve the growing village (former sea side resort) to the west.
With the end of the war, many Polish families began to move into the area from war-torn Europe, taking work at local industries; this led to the 1957 founding of St. Teresa Catholic Elementary School beside the church.
The local Father John Redmond Catholic Secondary School, which serves all the southern Etobicoke parishes, recently moved from the Alderwood area into the nearby former Mimico Asylum grounds which is in St Teresa's Parish.