Saint Juan Diego Parish
O'Fallon, Missouri
Last updated September 2026
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.
Your digital sanctuary for spiritual growth.
Continue on BibleTimes
Free scholarly tools for reading and studying Scripture.
Create free accountNearby churches in O'Fallon
Hope Bible Church
0.2 miNon-Denominational
173 Pieper Rd
Assumption of the Blessed Virgin Mary Catholic Church
1.2 miCatholic
403 N Main St
Sisters of the Most Precious
1.3 miNon-Denominational
204 N Main St
New Hope Christian Center
1.5 mi206 E Elm St
Cornerstone United Methodist Church
1.6 miMethodist
1151 Tom Ginnever Ave
New Life Church
1.7 mi1083 Cool Springs Industrial Dr