Nebraska State Fair Campground is in Grand Island. Very new. Paved roads and pads with gravel between. W/S/50 and 30 amp
South Dakota State Fair campground is in Huron. +1000 sites and open all season except for Fair time. Gravel roads and grass sites. 30 and some 50 amp. Fresh water spigots and dump stations scattered around. Icky bathrooms and showerhouses.
Brown County Fair camping all season except fair time in Aberdeen, SD. +500 spots, about 1/3 with w/s/e, and the rest with w/e. Gravel roads, grass or gravel sites.