St Kilian's has a long, rich history in Farmingdale, dating back to 1896 under the church's first pastor Rev. Father Gerard Spielmann. The church underwent a renovation as it approached the centennial celebration in 1995, where elements of the original church were preserved but additions were added to modernize it.
Today the church is led by Pastor Rev. Msgr. Michael P. Flynn and hosts many ministries, a food pantry, the La Salle Regional School and a religious education program.