Find events happening in O Fallon https://allevents.in Historic Homestead Days at Fort Zumwalt Park Fort Zumwalt Park, O'Fallon, Missouri, O Fallon, United States https://allevents.in/o-fallon/historic-homestead-days-at-fort-zumwalt-park/200030037367840 Rail District Festival Civic Park, 308 Civic Park Drive, O'Fallon, United States https://allevents.in/ofallon/rail-district-festival/100001996106463165 Rail District Festival Civic Park, 463 Civic Park Dr, O'Fallon, MO 63366, United States, O Fallon https://allevents.in/o-fallon/rail-district-festival/200030411487740 Tacos and Tequila Festival St. Louis at CarShield Field CarShield Field, 900 TR Hughes Blvd, O'Fallon, MO 63366, O Fallon, United States https://allevents.in/o-fallon/tacos-and-tequila-festival-st-louis-at-carshield-field/2400029584861610 Festival Familiar Hispano en San Juan Diego O'Fallon, Missouri, O'Fallon, Missouri, O Fallon, United States https://allevents.in/o-fallon/festival-familiar-hispano-en-san-juan-diego/200030532789557 Duckfest 2026 1270 Church Rd., St. Paul, MO, United States, Missouri 63366, 1270 Church Rd, O'Fallon, MO 63366-5104, United States, O Fallon https://allevents.in/o-fallon/duckfest-2026/200029885411228 Assumption Fall Festival 403 N Main St, O'Fallon, MO, United States, Missouri 63366, 403 N Main St, O'Fallon, MO 63366-2205, United States, O Fallon https://allevents.in/o-fallon/assumption-fall-festival/200030264362132 Whiskey Bent @ Assumption Fall Festival 403 N Main St, O'Fallon, MO 63366-2205, United States, 403 N Main St, O'Fallon, MO 63366-2205, United States, O Fallon https://allevents.in/o-fallon/whiskey-bent-assumption-fall-festival/200030392490114 Pittie Palooza 308 Civic Park Dr, O'Fallon, MO 63366, United States, Krekel Civic Center, 308 Civic Park Dr, O'Fallon, MO 63366, United States, O Fallon https://allevents.in/o-fallon/pittie-palooza/200030413735159