Depending upon how far you want to travel? There is a KOA in Richmond. We've stayed there a few times. It's a typical KOA... full hook-up, and sites are a mid-range size. Nice people, easy access to Richmond.
If you don't mind a little further drive, White Water State park, Brookville State recreation area, and Mounds State recreation (not to be confused with Mounds State park in Anderson.) We have stayed at all 3 of these parks on several times over the years, and love each one of them. We hit all 3 this year 2015).
There are a number of private campgrounds in the area too, but we enjoy the 3 near Liberty, Indiana, we wouldn't even begin to think of staying anywhere else if we are anywhere in that pocket area of Indiana. Also, the 3 campgrounds are not that far from Connersville and Metamora, Indiana. Not sure if they still have, (haven't checked), but they use to have a train that ran from Connersville to Metamora. When the kids were littler, we paid a little more so we could ride in the caboose.
That whole area of Indiana (Richmond South) is a great area! I strongly suggest the 3 campgrounds. But, KOA is right there at Richmond right off I-70.