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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!

Donate Online Here



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 weekend groups contact Camp first to inquire about availability and 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 or email

For more information on:

Things to do at Camp, click here.

Facility rental and programming options, click here.

Year-Round Facilities at Camp Ondessonk, click click here.

Calendar of Events, click here.


OpenIMG_2433 Camping Winter/Spring 2018

January 5 through February 2018: ALL WEEKENDS OPEN – we have heated cabins!

March 2 – 4, 2017: OPEN   – also hosting the Maple Sugarin’ WeekendMore info HERE.

March 9 – 11, 16 – 18, and 23 – 25: OPEN

March 30 – April 1: CLOSED for the Easter holiday

April 6 – 8: OPEN

April 13 – 15OPEN Also hosting our 2nd Annual Waterfalls, Wildflowers, and Wineries WeekendThis event is SOLD OUT.

April 20 – 22: CLOSED for Spring Lodge Reunion and Stable Round-UpMore info HERE.

April 27 – 29: CLOSED for Father-Son Weekend.  More info HERE.IMG_1769

May 4 – 6: CLOSED – All-Decades Staff Reunion.  More info HERE

May 11 – 13: OPENAlso hosting First Time Camper Open House Saturday, May 12, 2018.  Limited program availability.  More info HERE.

May 18 – 20: OPEN for lodging only. No programs available.


May 21 – August 19: CLOSED for Summer Camp 2018!!!

Open Camping Fall 2018

10670063_10152763315065782_161944164873389797_nAugust 24 – 26: OPEN Limited lodging, meals, and programs.  Call for availability.  Also Hosting The Shawnee Hills 100-Miler Trail Race.  This is a private event.  Get more information and sign up HERE.

August 31st – September 3: CLOSED for Friends Weekend. This is an invite-only event. More info HERE.

September 7 – 9: OPEN

September 14 – 16: CLOSED for Fall Family Camp.  Register for this event HERE.

September 21 – 23OPEN

September 28 – 30: CLOSED for Fall Lodge Reunion.  This event is for Lodge members only.  More info HERE.  Camp is also hosting Fall Stable Round-Up.  This is an invite-only event.

October 5 – 7: CLOSED for Mother-Daughter Weekend.  Register for this event HERE.

October 12 – 14: CLOSED for Southern Illinois Fat Tire Fest presented by the Bike Surgeon from Shiloh, IL.  To register, CLICK HERE.

October 20 – 22: OPEN for limited lodging, but meals and programs will not be available.  We are hosting the 8th Annual Ondessonk Trail Races on Saturday, October 21.  Our annual Fall Family Fest will be Sunday, October 22.  More info on both of these great events soon.

October 26 – 28: OPEN

November 2 – 4, and November 10 – 12: OPEN

 November 15-18: CLOSED for 1st Deer Season

November 22-25: CLOSED for Thanksgiving holiday

November 28 – December 2: CLOSED for 2nd Deer Season

Download the Group Reservation Form 2018

Waiver 2018

All visitors and participants in programs, regardless of age, are required to sign a waiver.  Parents must sign a waiver for their children.

Camp Ondessonk Facilities Map

Rules and Regulations


***Upon arrival, please check in at the Main Camp Office in the St. Noel Center Monday-Friday 8am-4:30pm, or the Trading Post Fridays 5-9pm or Saturdays and Sundays 9am-12pm***

***Due to guests during the week, Unit and St. Noel Lodging may not be available for check-in  until 4:30pm on Fridays***

***Check-out time for St. Noel Lodging is 10am on Sundays***

*Please notify Camp of your arrival and departure times.  Office: (618) 695-2489, Weekend On-Duty Cell: (618) 759-1780*

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

Greg Santen- Program Director

(618) 695-2489 ext. 129

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