Catholic church
Assumption (O’Fallon)
O’Fallon, Missouri · United States
Assumption (O’Fallon) is a Catholic church in O’Fallon, Missouri, in the Archdiocese of St. Louis. Mass times are listed below. Confession and Adoration times are also published.
Upcoming online Masses
There are no verified upcoming online Masses for this church. Regular times above may still apply.
Mass and service times
Mass
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Sunday
Mass
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Sunday
Mass
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Sunday
Mass
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Sunday
Mass
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Saturday
Mass
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Saturday
Mass
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Monday
Mass
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Monday
Mass
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No weekly days published
Holy Days: 7:00 pm
Mass
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Holy Days: 8:00 am
Mass
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Holy Days: 6:30 am
Mass
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No weekly days published
Holy Days (Vigil): 5:30 pm
Mass
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Tuesday
Mass
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Tuesday
Mass
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No weekly days published
Christmas: 12:00 pm
Mass
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Christmas: 10:00 am
Mass
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Christmas: 8:00 am
Mass
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No weekly days published
Christmas Eve: 10:00 pm
Mass
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Christmas Eve: 4:30 pm Chapel; Chapel
Mass
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Christmas Eve: 6:00 pm
Mass
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Christmas Eve: 4:00 pm
Mass
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No weekly days published
New Years Day: 9:00 am
Mass
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No weekly days published
Easter: 8:00 am
Mass
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Easter: 8:15 am Chapel; Chapel
Mass
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Easter: 10:15 am Chapel; Chapel
Mass
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Easter: 10:00 am
Mass
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Easter: 12:00 pm
Mass
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No weekly days published
Good Friday: 7:00 pm
Mass
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Holy Thursday: 7:00 pm
Mass
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Wednesday
Mass
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Wednesday
Mass
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No weekly days published
Easter Vigil: 8:00 pm
Mass
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No weekly days published
Tuesdays in Lent: 6:00 pm Chapel; Chapel
Mass
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Thursday
Mass
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Thursday
Mass
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Friday
Mass
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Friday
Confession times
Confession
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Saturday
Confession
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Monday
Confession
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Tuesday
Confession
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Wednesday
Confession
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Thursday
Confession
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Friday
Adoration times
Adoration
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Tuesday
Chapel
Sources and checking
Church details last changed Sep 7, 2026. Stream links show the most recent successful destination check.
- Archdiocese of St. Louis (opens a new site)From the Archdiocese of St. Louis directory, checked Sep 6, 2026
- Archdiocese of St. Louis (opens a new site)From the Archdiocese of St. Louis directory, checked Sep 7, 2026