Our beautiful parish has a 150 year history here in O’Fallon! I invite you to join us, as a visitor or as a member of our loving parish family, as we continue that history of striving to follow Christ. I hope this website can answer your immediate questions, but you are always welcome to contact us personally, or better yet, to stop in for a visit to find Christ here... and bring Christ to the world.
Peace, Fr. Nick
Saturday Vigil: 5pm Sunday: 8am, 10am, 12-Noon, 5:30pm Monday-Friday: 6:30am, 8am & Saturday: 8am
Holy Day’s Vigil for Feast: 5:30pm Feast Day: 6:30am, 8am and 7pm
Calling all athletes and coaches! Wear your jerseys to 10AM Mass, Sunday, May 18, and join us for the Blessing of the Athletes! We will be celebrating our athletic c...
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On April 26, we are launching the Annual Catholic Appeal in our parish. The Appeal is one of the most impactful ways to Be Messengers of Hope in ...
We are having a parish facilities calendar meeting on Tuesday, May 27, at 6:30pm. Representatives from any parish group or ministry that uses our facilities are invited a...
Join us on Sunday, May 4, after the 8 AM, 10 AM and noon Masses for Hospitality Sunday in the Parish Center! Our Hospitality Sunday ministry will be serving up donut...
Carnival rides are back at the Assumption Fall Festival, Saturday, Oct. 4, from 2-11PM and Sunday, Oct. 5, from 11AM-5PM. Save the date and be sure to join us for one of ...
The Assumption Quilters are hosting a Quilt-of-the-Month raffle beginning August 2025 thru July 2026. All proceeds for this raffle will go to restoring Assumption’s...