One of the newest private campgrounds in central IL is Sankoty Lakes. They have a restaurant, are on the IL river, and have a few ponds. Just about 30 min north of Peoria. Small, new, and all FU from what I can see. Cabins too.
FYI -- Sankoty is the name of the underground river running from Canada to southern states. It's a huge aquafir that many towns/cities pull water from. Our home has a well, not city water, and we are tapped into the Sankoty.
Sankoty Lakes
