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Free Events and Things to do in O'Fallon, MO

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Spring Cleanup 2026 - St. Charles Main Street
Sun, Apr 26, 8:00 AM
St Charles · OPO Startups [1909 Old Post Office]
Spring Cleanup 2026 - St. Charles Main Street
Sun, Apr 26, 8:00 AM
St Charles · OPO Startups [1909 Old Post Office]
Number 9 Networking - Chesterfield, MO - 9am
Wed, Apr 1, 9:00 AM + 18 more
Chesterfield · Independent Electrical Contractors of Greater St. Louis
Number 9 Networking - Chesterfield, MO - 9am
Wed, Apr 1, 9:00 AM + 18 more
Chesterfield · Independent Electrical Contractors of Greater St. Louis
God is for Our City Food Pantry
Sat, Apr 11, 10:00 AM + 1 more
St. Peters · 888 Birdie Hills Rd
God is for Our City Food Pantry
Sat, Apr 11, 10:00 AM + 1 more
St. Peters · 888 Birdie Hills Rd
Look Out Below: Understanding and Treating Pelvic Health Issues
Thu, Jun 18, 6:00 PM
O'Fallon · 5551 Winghaven Blvd
Look Out Below: Understanding and Treating Pelvic Health Issues
Thu, Jun 18, 6:00 PM
O'Fallon · 5551 Winghaven Blvd
Sales end soon
DJ Trivia Mondays @ Chicken N Pickle
Monday at 7:00 PM + 40 more
Saint Charles · Chicken N Pickle - St. Charles
Sales end soon
DJ Trivia Mondays @ Chicken N Pickle
Monday at 7:00 PM + 40 more
Saint Charles · Chicken N Pickle - St. Charles
5 /20 St. Luke's Coffee & Conversations: Dementia & Communication Training
Wed, May 20, 10:00 AM
Chesterfield · St. Luke's Hospital Desloge Outpatient Center - Building A: Conference Room 3
5 /20 St. Luke's Coffee & Conversations: Dementia & Communication Training
Wed, May 20, 10:00 AM
Chesterfield · St. Luke's Hospital Desloge Outpatient Center - Building A: Conference Room 3
Sales end soon
DJ Trivia Thursdays @ Burnt Barrel Brewery & Distillery (Lake Saint Louis)
Today at 7:00 PM + 91 more
Lake Saint Louis · Burnt Barrel Brewery, Distillery & Mead
Sales end soon
DJ Trivia Thursdays @ Burnt Barrel Brewery & Distillery (Lake Saint Louis)
Today at 7:00 PM + 91 more
Lake Saint Louis · Burnt Barrel Brewery, Distillery & Mead
Medicine Cabinet Makeover
Thu, Apr 9, 6:30 PM
St. Peters · 1232 Jungermann Rd
Medicine Cabinet Makeover
Thu, Apr 9, 6:30 PM
St. Peters · 1232 Jungermann Rd
Men's Community Night: Bond & Barrel
Fri, Apr 3, 6:00 PM + 7 more
Cottleville · Men's Modern General Store
Men's Community Night: Bond & Barrel
Fri, Apr 3, 6:00 PM + 7 more
Cottleville · Men's Modern General Store
Sales end soon
Spring Blood Drive at SCC's Center for Healthy Living
Today at 10:00 AM
Dardenne Prairie · St. Charles Community College (SCC) – Dardenne Creek Campus
Sales end soon
Spring Blood Drive at SCC's Center for Healthy Living
Today at 10:00 AM
Dardenne Prairie · St. Charles Community College (SCC) – Dardenne Creek Campus
Youth Activities
Wed, Apr 1, 7:00 PM
Lake St Louis · The Church of Jesus Christ of Latter-day Saints
Youth Activities
Wed, Apr 1, 7:00 PM
Lake St Louis · The Church of Jesus Christ of Latter-day Saints
Stay Cool Climate Control SHRED-TACULAR!
Sat, Apr 11, 8:00 AM
O'Fallon · 407 Sonderen St
Stay Cool Climate Control SHRED-TACULAR!
Sat, Apr 11, 8:00 AM
O'Fallon · 407 Sonderen St
Stake SYLC
Sun, Apr 12, 4:00 PM
Lake St Louis · The Church of Jesus Christ of Latter-day Saints
Stake SYLC
Sun, Apr 12, 4:00 PM
Lake St Louis · The Church of Jesus Christ of Latter-day Saints
Messiah, Parts II and III
Fri, Apr 24, 7:30 PM
St. Louis · Missouri Baptist University
Messiah, Parts II and III
Fri, Apr 24, 7:30 PM
St. Louis · Missouri Baptist University
RedKey Lake St. Louis Grand Opening
Thu, Apr 16, 4:00 PM
St. Louis · 21 Meadow Lake Dr unit 316
RedKey Lake St. Louis Grand Opening
Thu, Apr 16, 4:00 PM
St. Louis · 21 Meadow Lake Dr unit 316
Going fast
Cavie's Caring Crew Book Launch Open House
Saturday at 10:00 AM
St. Louis · Duo Dogs, Inc.
Going fast
Cavie's Caring Crew Book Launch Open House
Saturday at 10:00 AM
St. Louis · Duo Dogs, Inc.
Boots, Blue Jeans & Boogie
Fri, Apr 10, 6:30 PM
Wright City · Cedar Lake Cellars
Boots, Blue Jeans & Boogie
Fri, Apr 10, 6:30 PM
Wright City · Cedar Lake Cellars
6/17 St. Luke's Coffee & Conversations: Adaptive Tools for Everyday Life
Wed, Jun 17, 10:00 AM
Chesterfield · St. Luke's Hospital Desloge Outpatient Center - Building A: Conference Room 3
6/17 St. Luke's Coffee & Conversations: Adaptive Tools for Everyday Life
Wed, Jun 17, 10:00 AM
Chesterfield · St. Luke's Hospital Desloge Outpatient Center - Building A: Conference Room 3
LBB Leisure Book Club Presents: My Husband's Wife by Alice Feeney
Tue, Apr 21, 6:30 PM
Cottleville · Mellow Mushroom
LBB Leisure Book Club Presents: My Husband's Wife by Alice Feeney
Tue, Apr 21, 6:30 PM
Cottleville · Mellow Mushroom
Medicare 101 at St. Luke's
Wed, May 6, 6:00 PM
Chesterfield · St. Luke's Hospital Desloge Outpatient Center - Building A-Conference Room 3
Medicare 101 at St. Luke's
Wed, May 6, 6:00 PM
Chesterfield · St. Luke's Hospital Desloge Outpatient Center - Building A-Conference Room 3

Trends in O'Fallon

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Frequently asked questions about O'Fallon

What are the best free events to attend?

According to Eventbrite, the best free events are:

Spring Cleanup 2026 - St. Charles Main Street

Number 9 Networking - Chesterfield, MO - 9am

God is for Our City Food Pantry

Look Out Below: Understanding and Treating Pelvic Health Issues

Which events are currently trending in O'Fallon?

The trending searches this month in O'Fallon are:

events happening today near me

Which free events are coming up?

Discover the best free events happening soon – you don't want to miss them:

Spring Blood Drive at SCC's Center for Healthy Living

DJ Trivia Thursdays @ Burnt Barrel Brewery & Distillery (Lake Saint Louis)

Cavie's Caring Crew Book Launch Open House

DJ Trivia Mondays @ Chicken N Pickle