find Halloween events for every vibe.

Vendors events in O'fallon, MO

Sales end soon
Sustainable Supply Chain: Innovations for Business Transformation
Tuesday at 5:30 PM
Woodstock · UMSL Entrepreneurship and Innovation Center
Sales end soon
Sustainable Supply Chain: Innovations for Business Transformation
Tuesday at 5:30 PM
Woodstock · UMSL Entrepreneurship and Innovation Center
Community Harvest Free Festival
Sat, Oct 18, 2:00 PM
Florissant · Calvary Bible Church of Florissant
Community Harvest Free Festival
Sat, Oct 18, 2:00 PM
Florissant · Calvary Bible Church of Florissant
Sales end soon
Job Fairs Success: How to Get a Job at a Career Fair Event - St. Louis
Wednesday at 7:00 PM + 87 more
Downtown West · Virtual (Online)
Sales end soon
Job Fairs Success: How to Get a Job at a Career Fair Event - St. Louis
Wednesday at 7:00 PM + 87 more
Downtown West · Virtual (Online)
Riverpsyde Gathering
Today at 12:00 PM
Columbus Square · Rootwad Park
Riverpsyde Gathering
Today at 12:00 PM
Columbus Square · Rootwad Park
Wreath making workshop
Fri, Nov 14, 5:00 PM + 1 more
Washington · The Main Street Studio
Wreath making workshop
Fri, Nov 14, 5:00 PM + 1 more
Washington · The Main Street Studio
St. Louis Fool Us Magician: Free First Friday Magic Show
Fri, Nov 7, 8:30 PM + 1 more
Benbush · Luvwoo Bar
St. Louis Fool Us Magician: Free First Friday Magic Show
Fri, Nov 7, 8:30 PM + 1 more
Benbush · Luvwoo Bar
Just added!
Fall Festival at City Greens Market
Sun, Oct 19, 11:00 AM
Forest Park Southeast · City Greens Market, Manchester Avenue, St. Louis, MO, USA
Just added!
Fall Festival at City Greens Market
Sun, Oct 19, 11:00 AM
Forest Park Southeast · City Greens Market, Manchester Avenue, St. Louis, MO, USA
Roll Call: Social Networking Fundraiser on wheels!
Sat, Oct 11, 6:00 PM
Pine Lawn · Skate King
Roll Call: Social Networking Fundraiser on wheels!
Sat, Oct 11, 6:00 PM
Pine Lawn · Skate King
CEU Opportunity - Designed For Entertaining Presented by True Caliber
Thu, Oct 23, 5:00 PM
Clayton · 8027 Forsyth Blvd
CEU Opportunity - Designed For Entertaining Presented by True Caliber
Thu, Oct 23, 5:00 PM
Clayton · 8027 Forsyth Blvd
2026 STL TechWeek
Mon, Apr 13, 9:00 AM
Columbus Square · America's Center Convention Complex
2026 STL TechWeek
Mon, Apr 13, 9:00 AM
Columbus Square · America's Center Convention Complex
The Soxial Xperiment presents Xperiment 314: The Fashion Show
Sat, Dec 6, 7:00 PM
Downtown West · The KRe8 Place - St. Louis
The Soxial Xperiment presents Xperiment 314: The Fashion Show
Sat, Dec 6, 7:00 PM
Downtown West · The KRe8 Place - St. Louis
Delish on Delmar 2025
Fri, Oct 17, 5:00 PM
Academy · Delmar Maker District
Delish on Delmar 2025
Fri, Oct 17, 5:00 PM
Academy · Delmar Maker District
St. Louis Comic Con 2026
Sat, Aug 29, 10:00 AM
Meadow Heights · Gateway Convention Center
St. Louis Comic Con 2026
Sat, Aug 29, 10:00 AM
Meadow Heights · Gateway Convention Center
PreK–12 Educator Workshop
Fri, Nov 7, 4:00 PM
Wydown Skinker · Mildred Lane Kemper Art Museum
PreK–12 Educator Workshop
Fri, Nov 7, 4:00 PM
Wydown Skinker · Mildred Lane Kemper Art Museum
Women in Travel Meetup Powered by Wanderful
Sun, Nov 23, 10:00 AM
Kosciusko · Nadine’s Hash House
Women in Travel Meetup Powered by Wanderful
Sun, Nov 23, 10:00 AM
Kosciusko · Nadine’s Hash House
SAFe® 5.1 POPM Certification Training in St. Louis, MO
Thu, Oct 23, 9:00 AM + 13 more
Downtown West · St. Louis, MO
SAFe® 5.1 POPM Certification Training in St. Louis, MO
Thu, Oct 23, 9:00 AM + 13 more
Downtown West · St. Louis, MO
Just added!
Snacks with RAC
Wed, Oct 29, 3:00 PM
Midtown · 3745 Foundry Way
Just added!
Snacks with RAC
Wed, Oct 29, 3:00 PM
Midtown · 3745 Foundry Way
Women In Business Meet Up
Wed, Oct 15, 6:00 PM
Dutchtown · Intertwine Wine Bar
Women In Business Meet Up
Wed, Oct 15, 6:00 PM
Dutchtown · Intertwine Wine Bar

Trends in O'fallon

Explore more trends

Sustainable Supply Chain: Innovations for Business Transformation

Sustainable Supply Chain: Innovations for Business Transformation

Community Harvest Free Festival

Community Harvest Free Festival

Job Fairs Success: How to Get a Job at a Career Fair Event - St. Louis

Job Fairs Success: How to Get a Job at a Career Fair Event - St. Louis

Riverpsyde Gathering

Riverpsyde Gathering

Wreath making workshop

Wreath making workshop

St. Louis Fool Us Magician: Free First Friday Magic Show

St. Louis Fool Us Magician: Free First Friday Magic Show

Fall Festival at City Greens Market

Fall Festival at City Greens Market

Roll Call: Social Networking Fundraiser on wheels!

Roll Call: Social Networking Fundraiser on wheels!

CEU Opportunity - Designed For Entertaining Presented by True Caliber

CEU Opportunity - Designed For Entertaining Presented by True Caliber

2026 STL TechWeek

2026 STL TechWeek

The Soxial Xperiment presents Xperiment 314: The Fashion Show

The Soxial Xperiment presents Xperiment 314: The Fashion Show

Delish on Delmar 2025

Delish on Delmar 2025

St. Louis Comic Con 2026

St. Louis Comic Con 2026

PreK–12 Educator Workshop

PreK–12 Educator Workshop

Women in Travel Meetup Powered by Wanderful

Women in Travel Meetup Powered by Wanderful

SAFe® 5.1 POPM Certification Training in St. Louis, MO

SAFe® 5.1 POPM Certification Training in St. Louis, MO

Snacks with RAC

Snacks with RAC

Women In Business Meet Up

Women In Business Meet Up

Things to do around O'fallon

Trends in O'fallon

1. Events happening today near me

2. Car shows

3. Crafts fair

4. Scramble golf tournaments

5. October

6. Trunk or treat

7. Job fairs

8. Puppy yoga

9. Kids

10. Halloween party

11. Puff and paint

12. Music bingo