If you are in Florida be sure to check out the State Park springs, fantastic camping sites. That would be Manatee Springs, Rainbow Springs, Silver Springs and Blue Springs. The one near Defuniak north of Orlando. Oddly FL has 4 parks with Blue Springs in their name. Homasassa State park is well worth the visit but no camping. If I was going to pick one, I would pick Manatee.
Florida Parks apparently just won their fourth gold medal in a national park competition. We take parks seriously down here, I think they are up to around 200 parks now.