If you are interested in camping at St. Joe and you need to reserve a campsite, here is what you need to do.  Check out Missouri State Parks. This is the Department of Natural Resources website for all state parks in Missouri and will allow you to reserve a campsite.  At St. Joe there is 2 primary campgrounds, one is set up for the Off-Road park and the other is set up for Horses and regular campers.  Both sites are extremely nice and well maintained.  Once you visit the site you will see the links for registering.  Please make sure you read all the rules and requirements before you book.  Thanks and enjoy your stay at St. Joe State Park.