St. Thomas the Apostle Church is a Catholic parish located in Glen Mills, Delaware County, Pennsylvania, United States.
Its historic church, located at 430 Valleybrook Road, was built in 1856 and holds a significant place in Pennsylvania's Catholic history.
On August 26, 1852, a tract of land was purchased from Nicholas F. Walter for the construction of a permanent church.
[4][5] The cost of the new church was primarily funded by James M. Willcox, the proprietor of Ivy Mills.
In 1957, the parish expanded with the addition of an elementary school and a convent to serve the growing Catholic community.