Welcome to St. Thomas Mass time 9:00 Sunday Morning Welcome to St. Thomas Catholic Church in De Smet, SD. We hope you enjoy your stay. Let us know how we can serve you by contacting us. Daily Mass ~ Friday 8:00amConfession Times ~ call for appointment! Exposition ~ Wednesdays 5-6pm contact Contact +1 605-854-3564 512 3rd St. SW, De smet, SD Facebook-f Twitter Google-plus-g Instagram Youtube Pinterest