History:
The assembly of Catholic people who reside in North Falmouth, West Falmouth, and Hatchville areas of Cape Cod, since 1915 have gathered together in two different places of worship - one a chapel dedicated to Our Blessed Mother, under the title of The Immaculate Conception, and, since 1977, in a church dedicated to St. Elizabeth Ann Seton. Prior to 1915, this whole area and all the Catholic faithful therein, were within the confines and the fold of the parish of St. Joseph, Woods Hole. As the number of Catholics increased, an abandoned summer casino-theatre building on County Road, Megansett, was purchased and converted into a place of worship. It became the Chapel of the Immaculate Conception, where all the faithful residing in this section of St. Joseph's Parish gathered for Mass and spiritual guidance and refreshment and their children for religious education. There was no resident priest, however. The chapel was a mission outpost of St. Joseph's, Woods Hole, where the pastor resided.

The number of Catholics continued to increase, and in 1977 Bishop Daniel A. Cronin of the Fall River Diocese, of which Cape Cod is a part, separated this chapel area from the parish in Woods Hole, and erected it a parish unto itself. He appointed Father Joseph L. Powers as its first and founding pastor.

Plans for a new parish church were begun and on June 11, 1977, Bishop Cronin joyously celebrated the first Mass in the newly-completed church. In the following month, July 17, 1977, with the assistance of Bishop Cronin, Father Powers, and many assisting priests, in the presence of hundreds of happy and grateful parishioners, His Excellency, Most Reverend Jean Jadot, D.D. Phd., the Apostolic Delegate to the United States, consecrated this house of God to the honor, glory and worship of God, under the title of St. Elizabeth Seton, who had been canonized a saint just two years before the first American-born citizen to have been so honored.