Halloween events in St. Louis

Science gets spooky at the Saint Louis Science Center's Halloween Science Spooktacular! Get ready for science thrills at this no-cost, candy-free event packed with Halloween-themed festivities for the entire family.

The Butterfly House becomes The BOOterfly House in October to celebrate all things creepy and crawly. Kids can hang out with Professor Von Flytrap and his friends in the Creepy Crawly Cave and have lots of hair-raising fun.

Explore the St. Louis Zoo after dark at Boo at the Zoo. Bring your little ghouls and goblins to this non-scary celebration designed just for kids. Though this is not a trick-or-treating experience, costumes are encouraged.

Step into the wonder and beauty of butterflies, insects, spiders and their many-legged friends at the Bug Ball.

There are two ways to participate in the Jack O'Lantern Trail and Trunk or Treat 2021 at Faust Park.  Decorate your vehicle in a family friendly way for trunk or treat, or decorate a pumpkin, either individually or as a group, for the pumpkin decorating contest. You can also participate in both!

Your family is invited to join the friendly ghosts and howling goblins at the free Halloween Hoopla in Fronteir Park.

Bring your kids and your dog to the Purina Farms Trunk or Treat! In addition to plenty of treats for your two-legged and four-legged little ones, there will be face painting, games, balloon animals and a family entertainment area. Advance tickets are required.