The Original Lemp Mansion Halloween Bash
Features an open bar, appetizer buffets, live bands, and costume contest.
13 Halloween food, drink, and parties near Mehlville.
From historic mansions to local breweries, Mehlville's Halloween calendar offers diverse celebrations. Consider the grand Lemp Mansion Halloween Bash for a classic evening, or a drive out to O'Fallon for Oktoberfest. The events span ticketed parties and community gatherings.
These gatherings feature everything from costume contests to specialized food and drink pairings, providing different experiences for adults and families alike. Explore the map to find the perfect spot near you.
Non-scary, kid-friendly Halloween evenings with festive decorations and animals.
Massive screampark featuring 13 haunted attractions and a haunted hayride.
Live Halloween rock hits, courtyard bonfire ghost stories, and tarot readings.
See all Halloween parties, events, and celebrations in your area.
The ticket page is the truth: look for "21+" or an ID-required note, and assume any bar crawl, nightclub party, or late-night event is 21+ even if unstated. All-ages versions usually run as daytime or early-evening events with "family" in the listing. Mixed venues sometimes flip at 8 or 9 pm, so a legal-but-underage friend needs the exact cutoff time.
Don't try. Instead, name the route order at check-in, set one anchor bar as the regroup point at a fixed time, and start a group thread with live locations. Sub-groups moving at their own pace beat one herd waiting outside every bathroom. Matching costume elements, same hats, same glow color, let you spot your people across a packed room instantly.
Many big parties are no-re-entry or charge again, which matters when your coat, charger, or a smoke break lives outside. Check the policy at the door before you exit, not after, and get the hand stamp verified where re-entry exists. Plan around it: coat check inside, portable charger in a pocket, and the group exits together or not at all.