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

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Ondessonk Experience

Camp Ondessonk has proudly served campers since the summer of 1959.  Ondessonk’s 983 acre site is adjacent to the Shawnee National Forest and is among the most scenic summer camps in the United States.  The Ondessonk Experience is deliberately designed to immerse participants in a setting not often encountered by the youths of today. This traditional approach to summer camping allows participants to fully experience their surroundings in a fun, adventurous, and supportive environment.

Camp Ondessonk is owned and operated by the Catholic Diocese of Belleville, Illinois.  Christian traditions and teachings guide the work of the this ministry.  People of all faiths are encouraged and welcome to enjoy the Ondessonk experience.

Camp Ondessonk Tradtional Camp
Camp Ondessonk Traditional Camp

Traditional Camp

This is where it all started.

For over 60 years, traditional summer camp programs have been the Ondessonk favorite for kids ages 10-15 years old. Learn and perfect skills like canoeing, archery, horseback riding, and more. At night, roast marshmallows over campfires, or play an all-camp game of extreme flashlight tag.  Read More

Camp Ondessonk Mini Camp and Mini Camp Explorers
Ages 8-10 years old


Mini Camp & Mini Camp Explorers

Teaching what matters most

All summer camp programs are modified to best serve the mini-camp age group.  With one Ondessonk counselor for every three or four campers, mini campers receive nearly constant guidance and companionship from our caring staff.  Read More

Camp Ondessonk Small Town Big Deal
Camp Ondessonk a residential youth summer camp was recently featured on the new hit television show Small Town Big Deal on RFD-TV.Watch Video
Camp Ondessonk Adventure Camp
Camp Ondessonk Mountain Biking Adventure Camp

Adventure Camps

Programs designed for teenagers.

Camp Ondessonk has specially designed adventure summer camp programming for teenagers including:  Mountain biking, Backpacking, Horseback Riding, Rock Climbing and River Adventure.
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Camp Ondessonk Counselors in training
CIT- Counselors In Training


Counselors in Training

Ages:  15 years only

The CIT program is a two week leadership development session designed to prepare participants for possible future counselor positions.  Read More


How to apply for a Camp Ondessonk Scholarship

The Gift of Camp

In an effort to make Camp Ondessonk more accessible to children of all economic means, three scholarship opportunities are available. Read More

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