Happening Next

O Fallon Halloween Events

Halloween events Happening Next in O Fallon, IL

Trunk or Treat

 1560 N. Green Mount Rd., O'Fallon, IL, United States, Illinois 62269 17 Oct 2026
HALLOWEEN

Annual Trunk Or Treat Spectacular

 1268 Central Park Dr, O'Fallon, IL, United States, Illinois 62269 24 Oct 2026
CONTESTS

Trunk or Treat | Newbold Toyota + BMW

 1282 Central Park Dr, O'Fallon, IL 30 Oct 2026

Caffeine and Chrome - Gateway Classic Cars of St. Louis

 Gateway Classic Cars of St. Louis 31 Oct 2026
FITNESS FREE

Lil Sister - Halloween Party @ 1st Street Lounge (O'Fallon)

 1st Street Lounge 31 Oct 2026
HALLOWEEN-PARTIES

Treats in Trunks @ Dogwood Social House

Dogwood Social House O'Fallon IL 31 Oct 2026
TRUNK-OR-TREAT

🎃 Gears and Ghouls! 🚗👻

 1206 Central Park Dr., O'Fallon, IL 31 Oct 2026
KIDS

Caffeine and Chrome – Gateway Classic Cars

1237 Central Park Dr, O'Fallon, IL, United States, Illinois 62269 31 Oct 2026

Family Movie Night

 505 S Cherry St, O'Fallon, IL 16 Oct 2026
ENTERTAINMENT

Treat Trek (indoor trick or treat experience)

 Shiloh Church 25 Oct 2026
TRIPS-ADVENTURES

October PTO Meeting

 1050 Ogle Rd, O'Fallon, IL 62269-7120, United States 20 Oct 2026
MEETUPS

Briarstone Halloween Spooktacular Schooling Show

 Briarstone Riding Academy 24 Oct 2026
CONTESTS