St. Pius X Catholic Church, one of seven Catholic churches in Fairfield overseen by the Roman Catholic Diocese of Bridgeport, was established in 1955 and the parish's first Masses were held in the Students' Chapel in Loyola Hall at Fairfield University until construction of the building housing St. Pius X Catholic Church was completed in 1958. The parish's first weddings, baptisms and funerals were held at Holy Family Church in Fairfield.
St. Pius X Catholic Church's first congregation consisted of 464 families and that number today is 1,817 families. The church's seating capacity is 612 parishioners.
St. Pius X Catholic Church, 834 Brookside Drive, was planning in early 2010 to build a a faith center that would include space for group and ministry meetings, a chapel and prayer garden for smaller assemblies and spiritual meditation, a community room for parish social events and offices and had embarked on a $5.5 million capital campaign for the project.
The Mass schedule at St. Pius X Catholic Church is 8:30 a.m. Monday through Friday; 8:30 a.m. and 5:15 p.m. Saturday; and 7:30 a.m., 9 a.m., 10:30 a.m. and noon on Sunday. Confessions are held from 4 to 4:45 p.m. Saturday.
The pastor at St. Pius X Catholic Church is Monsignor Lawrence Carroll.