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O'Fallon, Missouri
O'Fallon Events and Celebrations
* Check details and venue hours for multi-day listings.
"I Voted" Sticker Design Contest - Middle SchoolSep 01, 2025, 8:00 AM – Nov 21, 2025, 6:00 AMwww.sccmo.org/2404/I-Voted-Sticker-Contest
Dardenne Prairie Day celebrationSep 27, 2025, 12:00 PM – 9:30 PMO'Fallon, 2032 Hanley Rd, O'Fallon, MO 63368, USA
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