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.
We traveled to Indianapolis for the Olympic Swimming Time Trials. Stayed here 2 nights with our 2 grand-daughters. The area we stayed was directly adjacent to a bike path. It was separated by a fence and there was a gate right next to our site. The gate was locked however the gates were far enough apart that someone could get between them. Our first night, someone actually did this and walked right behind our site.
The shower house was in serious need of some improvements! Old, dark, leaky pipes.
The area was OVERLY well lit, to the point we were hanging sleeping bags over the windows to try and make it somewhat dark inside the camper!
Getting to the sites took some figuring out also. We entered at the main gate to the fairgrounds and there were no signs directing us to the sites. Had to use GPS with satellite view to figure our way there.
For comparison, we've stayed at the Iowa State Fairgrounds and this is a night and day difference. Iowa Fairgrounds sites are $20 less per night, very nice shower facilities and plenty of room between sites.
We would stay here again but we'd need to exhaust all other options first.
BTW, the price listed is wrong. We paid $50/night.
We stayed here for the eclipse in April. No real issues. Kids had plenty of room to run around, hike and safely ride bikes around the campground. Showers and bathrooms were typical for a state park.
There were heavy storms the night before the eclipse and everyone in tents were completely soaked. The area around our site had really poor drainage. We had noisy neighbors that were up until at least 2 or 3 with zero regards for anyone else trying to sleep.
We were planning to stay at the campground inside the Badlands. Lucky for us they were full! This campground was great! Tent site near the road but hardly any traffic out here. The views of the park and the sky were amazing! Fire allowed here so that was a plus over the NP campground! There is a pool here but we didn’t use. Newer shower house with 4 individual bathrooms was nice. Plenty of hot water. RV spots look a little close and some of the inside spots looked like they were only rock as opposed to grass. They also have a breakfast menu which we decided to go with instead of trying to make breakfast after tearing down camp. Delicious and reasonably priced. Overall, we were glad we found it! Would definitely stay here again!