We're out in St. Charles County. There are at least two excellent parks here for campouts. I'd try for the special group camp area at Indian Camp Creek Park. It's up Hwy 61 close to Troy. Popular, so it could be busy. Another County Park is Klondike. It's between Defiance and Augusta on Hwy 94. Lastly, you could try Cuivre River State Park up at Troy. We been to all three, more than once, and liked every one.