Halloween in O Fallon

Halloween
Halloween Parties
Costume Parties
Trunk or Treat
Ghost-hunts

Your Guide For The Halloween In O Fallon

Explore The Best of Halloween Parties & Events in O Fallon, MO

HAPPY HALLOWEEN CRAFT & VENDOR EVENT

 O'Fallon Elks Lodge 19 Oct 2025

Assumption Fall Festival

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

Trunk or Treat - O'Fallon

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

Food Truck Fright

 Dames Park Dr, O'Fallon, MO 63366, United States 10 Oct 2025

Happy Halloween Parking Lot Event

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

Haunted House - O'Fallon

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

Happy Halloween Craft and Vendor Event

 O'Fallon Elks Lodge 19 Oct 2025
FREE

Happy Halloween Parking Lot Event

 306 Sonderen St 11 Oct 2025
FREE

Trunk or Treat

 8945 Veterans Memorial Parkway, O'Fallon, MO, United States, Missouri 63366 25 Oct 2025

ST. CHARLES COUNTY TRUNK OR TREAT

 101 Sheriff Dierker Ct, O'Fallon, MO, United States, Missouri 63366 18 Oct 2025

Halloween Parents Night Out

1930 Trade Center Drive , Saint Peters, MO, United States, Missouri 63376 24 Oct 2025

Tosstoberfest 2025 Presented by Mercy

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