Ohio State Parks (http://www.dnr.state.oh.us/parks/overnightfacilities/camping/tabid/19426/Default.aspx)
Hamilton County Campgrounds (Cincinnati area) (http://www.hamiltoncountyparks.org/rec_camping/camping.htm)
Buckeye Lake (Columbus East) (http://koa.com/where/oh/35101/)
Twin Lakes (NW Ohio) (http://www.camptwinlakesohio.com/default.asp?file=Home)
Ohio Campgrounds (http://www.ohiocamper.com/)