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Be the puff in our marshmallow, the volume in our cheers,
the reason we make Incredible Camp O Campers.

Support Camp Ondessonk with a gift to our Annual Appeal!

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For those wishing to just kick back and do their own thing, or schedule lodging, meals, or programs a la carte for a family weekend or group event, the following dates are weekends open for group camping and programming at Camp Ondessonk during the school year. It is advised that groups make reservations several months in advance – especially larger groups wanting meals and programs and for dates during the busier months of April, May, September, and October.  Call (618) 695-2489 x129 or email greg.santen@ondessonk.com


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Open Camping Dates – Late Summer/Fall 2021

10670063_10152763315065782_161944164873389797_nBeginning the weekend of August 20th, 2021, Ondessonk will be OPEN for groups and families for lodging and meals only. Program options will become available later in the Fall. Call Camp well ahead of time.

***Open camping is available during weekdays as well as weekends. Call for availability. 

Fall 2021 Weekends:

August 20-22: OPEN for limited lodging and meals only. No programs. 

August 27-29: OPEN. Hosting The Shawnee Hills 100-Mile Endurance Run.  You must register through the organization’s website HERE.

September 2-6: CLOSED for Friends Weekend.

September 10-12: OPEN

September 17-19: CLOSED for Fall Family Camp. More info soon.

September 24-26: CLOSED for Fall Lodge Reunion and Stable Round-Up. More info soon.

October 1-3: OPEN

October 8-10: CLOSED for Mother-Daughter Weekend. More info soon.

October 14-17: CLOSED for Southern Illinois Fat Tire Fest presented by the Bike Surgeon from O’Fallon, IL.  You must register through the Bike Surgeon’s website HERE.

October 22-24: OPEN

October 29-31: OPEN

November 5-7 and 12-14: OPEN

November 18-21: CLOSED for 1st Deer Season

November 24-28: CLOSED for Thanksgiving holiday

December 1-5: CLOSED for 2nd Deer Season

December 10-12 and 17-19: OPEN. We have heated cabins and availability in St. Noel!

December 24, 2021-January 3, 2022: Camp Office CLOSED. Call for day visits and hiking opportunities.


Open Camping Winter 2021/2022

IMG_3646All dates in January and February are OPEN. 

Call for availability.

We have heated cabins!

Rooms in St. Noel Center are also available!





Open Camping Spring 2022

Most weekdays and some weekends are open for camping/lodging through the months of March, April, and early May. Call well in advance to schedule meals and/or programs. Some weekends are open for lodging only. Call Camp for availability.

***Open camping is available during weekdays as well as weekends. Call for availability. 

Spring 2022 Weekends:

All of March including all weekends are OPEN! Units are going fast! Call Camp soon!

April 1 – 3: OPEN

April 8-10: OPEN

April 15-18: CLOSED for Easter holiday. No services available.

April 22 – 24: CLOSED for Spring Lodge Reunion Weekend. More info soon. 

April 29 – May 1: CLOSED for Father-Son Weekend. More info soon.

May 6 – 8: OPEN

May 13 – 15: LAST OPEN SPRING WEEKEND. OPEN for camping/lodging only. No meals or programs. 

May 16: Camp will be closed to prepare for Summer Camp 2022! See you in August!


If you have any questions, please feel free to contact:

Greg Santen- Guest Services Director


(618) 695-2489 ext. 129

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