Our beautiful parish has a 155 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
Assumption has been a beacon of light in our community for 155 years. Anyone who drives down Main Street can see that the people of God within have built something beauti...
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Together, we are One Body in Christ. For 155 years, Assumption of the Blessed Virgin Mary Parish has been a place where our community gathers to worship, grow in faith...
Advent By Candlelight Reservations Women of the parish! It’s almost that time again to set aside the hustle and bustle of the holidays, and focus your mind...
TRAFFIC ALERT The O’Fallon Main Street Phase 3 project begins Monday, October 19, and will last approximately 9 months. Traffic will be down to one lane i...
Remember to vote ‘YES’ for Amendment 3 on November 3, 2026! On November 3, voters will get the opportunity to restore pro-life values back into the Missour...
We now have an Assumption Chapel Endowment Fund! Just like our houses, God’s house also needs work to keep it maintained and looking nice. Here are a few t...