Nice campground!
We've stayed here a number of times now in the past 2 years (not during fair weeks.) Campgrounds are located on the east side of the actual fairgrounds. There are hundreds of sites here. Some are flat, some are no where near flat, but there are so many, you can find one that will work for you! Almost all of the sites are full grass sites. The main shower house is the only one we've ever used and have no complaints. They are clean and bright and well kept.
The sites are $32/night.
Month of VisitJune