Assumption of the Blessed Virgin Mary Catholic Church

O Fallon, Missouri

Address

403 N Main St

Denomination

Catholic

Service times

Sun
8:00 AM Mass10:00 AM Mass12:00 PM Mass5:30 PM Mass7:00 PM Mass
Mon
6:30 AM Mass
Tue
8:00 AM Mass9:00 AM
Wed
6:30 AM Mass
Thu
6:30 AM Mass
Fri
6:30 AM Massduring Lent
Sat
8:00 AM Mass5:00 PM5:00 PM Mass

Languages

English

Founded

1969

Last updated September 2026

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5,000-20,000

estimated members

This is likely one of 20 Catholic congregations in St. Charles County, MO. Catholic accounts for 9% of the county's 230 congregations.

This estimate comes from ARDA 2020 data for churches of this size and denomination in the county.

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