Free community Events and Things to do in O'fallon, IL

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Craft and Vendor Fairs 2026
Sat, May 9, 10:00 AM
Maryville · Anderson Hospital
Craft and Vendor Fairs 2026
Sat, May 9, 10:00 AM
Maryville · Anderson Hospital
O’Fallon Community Developing Organization
Sat, May 9, 10:00 AM + 3 more
St. Louis · O'Fallon Park Rec Complex
O’Fallon Community Developing Organization
Sat, May 9, 10:00 AM + 3 more
St. Louis · O'Fallon Park Rec Complex
Community Day 2026
Sat, Sep 26, 10:00 AM
St. Louis · The Hub
Community Day 2026
Sat, Sep 26, 10:00 AM
St. Louis · The Hub
Treesilience St. Louis City Orientation- Delmar Divine
Sat, May 9, 9:30 AM
St. Louis · 5501 Delmar Blvd
Treesilience St. Louis City Orientation- Delmar Divine
Sat, May 9, 9:30 AM
St. Louis · 5501 Delmar Blvd
Sales end soon
Cahokia Mounds Spring Market
Tomorrow at 9:00 AM + 1 more
Collinsville · Cahokia Mounds State Historic Site
Sales end soon
Cahokia Mounds Spring Market
Tomorrow at 9:00 AM + 1 more
Collinsville · Cahokia Mounds State Historic Site
Sales end soon
Clean Up Day - Saint Louis Gardens Neighborhood
Tomorrow at 10:00 AM
Sauget · 1115 St Bruno St
Sales end soon
Clean Up Day - Saint Louis Gardens Neighborhood
Tomorrow at 10:00 AM
Sauget · 1115 St Bruno St
Unplug & Reconnect: Women Veterans Day Gathering
Fri, Jun 12, 11:00 AM
O'Fallon · Rock Springs Park Trail
Unplug & Reconnect: Women Veterans Day Gathering
Fri, Jun 12, 11:00 AM
O'Fallon · Rock Springs Park Trail
Emerging Conservationists Social
Sat, May 16, 10:00 AM
St. Louis · 3024 Cherokee St
Emerging Conservationists Social
Sat, May 16, 10:00 AM
St. Louis · 3024 Cherokee St
Open House - Discover Care, Community, Connection
Thu, May 14, 3:30 PM
St. Louis · St Elizabeth's Adult Day Care Center - St. Louis
Open House - Discover Care, Community, Connection
Thu, May 14, 3:30 PM
St. Louis · St Elizabeth's Adult Day Care Center - St. Louis
Park2Park: A Day of Remembrance One Year After
Sat, May 16, 9:00 AM
St. Louis · O'Fallon Park
Park2Park: A Day of Remembrance One Year After
Sat, May 16, 9:00 AM
St. Louis · O'Fallon Park
Reading is Fire
Sat, Jun 13, 11:00 AM
St. Louis · Ritz Park
Reading is Fire
Sat, Jun 13, 11:00 AM
St. Louis · Ritz Park
Just added
Ville/Greater Ville & Vandeventer Neighborhoods Partnership Cleanup
Sat, Jun 6, 9:00 AM
St. Louis · 4153 Dr Martin Luther King Dr
Just added
Ville/Greater Ville & Vandeventer Neighborhoods Partnership Cleanup
Sat, Jun 6, 9:00 AM
St. Louis · 4153 Dr Martin Luther King Dr
Pretty Girl Summit - Dream Big
Sat, Jul 11, 3:00 PM
St. Louis · Painted Visions Events LLC
Pretty Girl Summit - Dream Big
Sat, Jul 11, 3:00 PM
St. Louis · Painted Visions Events LLC
Park2Park: A Day of Remembrance One Year After
Sat, May 16, 1:00 PM
St. Louis · Fountain Park
Park2Park: A Day of Remembrance One Year After
Sat, May 16, 1:00 PM
St. Louis · Fountain Park
Sales end soon
St Louis Earthday 2026 - All Species Parade! 4/26 11am
Sunday at 11:00 AM
St. Louis · Forest Park- Muny Grounds
Sales end soon
St Louis Earthday 2026 - All Species Parade! 4/26 11am
Sunday at 11:00 AM
St. Louis · Forest Park- Muny Grounds
Brick X Brick Collective Monthly Meet Up
Thu, May 14, 6:00 PM + 5 more
St. Louis · Invest STL
Brick X Brick Collective Monthly Meet Up
Thu, May 14, 6:00 PM + 5 more
St. Louis · Invest STL
16th Annual Interfaith Concert: "Compassion For All"
Sun, Oct 11, 4:00 PM
St. Louis · The Sheldon Concert Hall and Art Galleries
16th Annual Interfaith Concert: "Compassion For All"
Sun, Oct 11, 4:00 PM
St. Louis · The Sheldon Concert Hall and Art Galleries
Going fast
Silent STL - Big Girl Blitz Book Club
Sun, Sep 13, 12:30 PM
St. Louis · Rockwell Beer Company
Going fast
Silent STL - Big Girl Blitz Book Club
Sun, Sep 13, 12:30 PM
St. Louis · Rockwell Beer Company
2026 Community Fair and Ice Cream Social
Sat, May 2, 1:00 PM
Affton · 5025 Lakewood Ave
2026 Community Fair and Ice Cream Social
Sat, May 2, 1:00 PM
Affton · 5025 Lakewood Ave
From Pentagon to Playground : Meet Me in St. Louis Book Tour
Thursday at 6:00 PM
University City · Subterranean Books
From Pentagon to Playground : Meet Me in St. Louis Book Tour
Thursday at 6:00 PM
University City · Subterranean Books

Trends in O'fallon

Explore more trends

Frequently asked questions about O'fallon

What are the best free events to attend?

According to Eventbrite, the best free events are:

Craft and Vendor Fairs 2026

O’Fallon Community Developing Organization

Community Day 2026

Treesilience St. Louis City Orientation- Delmar Divine

Which events are currently trending in O'fallon?

The trending searches this month in O'fallon are:

egg hunt

mothers day brunch

events happening today near me

mother's day

Which free events are coming up?

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

Cahokia Mounds Spring Market

Clean Up Day - Saint Louis Gardens Neighborhood

St Louis Earthday 2026 - All Species Parade! 4/26 11am

From Pentagon to Playground : Meet Me in St. Louis Book Tour

Craft and Vendor Fairs 2026

Craft and Vendor Fairs 2026

O’Fallon Community Developing Organization

O’Fallon Community Developing Organization

Community Day 2026

Community Day 2026

Treesilience St. Louis City Orientation- Delmar Divine

Treesilience St. Louis City Orientation- Delmar Divine

Cahokia Mounds Spring Market

Cahokia Mounds Spring Market

Clean Up Day - Saint Louis Gardens Neighborhood

Clean Up Day - Saint Louis Gardens Neighborhood

Unplug & Reconnect: Women Veterans Day Gathering

Unplug & Reconnect: Women Veterans Day Gathering

Emerging Conservationists Social

Emerging Conservationists Social

Open House - Discover Care, Community, Connection

Open House - Discover Care, Community, Connection

Park2Park: A Day of Remembrance One Year After

Park2Park: A Day of Remembrance One Year After

Reading is Fire

Reading is Fire

Ville/Greater Ville & Vandeventer Neighborhoods Partnership Cleanup

Ville/Greater Ville & Vandeventer Neighborhoods Partnership Cleanup

Pretty Girl Summit - Dream Big

Pretty Girl Summit - Dream Big

Park2Park: A Day of Remembrance One Year After

Park2Park: A Day of Remembrance One Year After

St Louis Earthday 2026 - All Species Parade! 4/26 11am

St Louis Earthday 2026 - All Species Parade! 4/26 11am

Brick X Brick Collective Monthly Meet Up

Brick X Brick Collective Monthly Meet Up

16th Annual Interfaith Concert: "Compassion For All"

16th Annual Interfaith Concert: "Compassion For All"

Silent STL - Big Girl Blitz Book Club

Silent STL - Big Girl Blitz Book Club

2026 Community Fair and Ice Cream Social

2026 Community Fair and Ice Cream Social

From Pentagon to Playground : Meet Me in St. Louis Book Tour

From Pentagon to Playground : Meet Me in St. Louis Book Tour

Things to do around O'fallon

Trends in O'fallon

1. Egg hunt

2. Mothers day brunch

3. Events happening today near me

4. Mother's day

5. Scramble golf tournaments

6. Mothers day weekend events near me

7. Job fairs

8. Car shows

9. Singles

10. Comedy shows

11. Kid friendly

12. Wine

What are the best free events to attend?

Which events are currently trending in O'fallon?

Which free events are coming up?