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O'FallonIllinois
22 events
Mon, Dec 14Community
Light Up O'Fallon Holiday Lights Contest
Katy Cavins Community Center
O'Fallon, IL
22 things to do in O'Fallon, Illinois this month
December 2026 in O'Fallon, Illinois brings 22 live events across the city, led by family (15), holiday (4), art (2). Here's what's on.
Katy Cavins Community Center
O'Fallon, IL