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
After 8AM Mass in the Church, join the O'Fallon American Legion Post 388, Monday, May 26 in the Assumption Cemetery, to honor and remember those who died in service o...
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In the wake of the devastating tornadoes that struck the St. Louis region last Friday, many of our brothers and sisters have been displaced and desperately need our suppo...
Deacon Bob Hennekes’ Ordination to the Priesthood, May 24; Mass of Thanksgiving at Assumption, May 25 Our very own Deacon Robert Hennekes will be ordained t...
On April 26, we launched the Annual Catholic Appeal in our parish. The Appeal is one of the most impactful ways to Be Messengers of Hope in our c...
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...
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...