O Fallon Halloween Events

Halloween events Happening Next in O Fallon, MO

HAPPY HALLOWEEN CRAFT & VENDOR EVENT

 O'Fallon Elks Lodge 19 Oct 2025
HALLOWEEN

Happy Halloween Parking Lot Event

306 Sonderen Street , O'Fallon, MO, United States, Missouri 63366 11 Oct 2025
HALLOWEEN

Haunted House - O'Fallon

 1 Club Way Dr, St Peters, MO 63376-8000, United States 24 Oct 2025
HALLOWEEN

Happy Halloween Craft and Vendor Event

 O'Fallon Elks Lodge 19 Oct 2025
HALLOWEEN FREE

Trunk or Treat - O'Fallon

 1 Club Way Dr, St Peters, MO 63376-8000, United States 25 Oct 2025
TRUNK-OR-TREAT

Assumption Fall Festival

403 N Main St, O'Fallon, MO, United States, Missouri 63366 4 Oct 2025
FESTIVALS

Tosstoberfest 2025 Presented by Mercy

 107 Sheriff Dierker Ct, O'Fallon, MO 63366-2468, United States 11 Oct 2025
SPORTS