It is so confusing for us tourists....Sioux City is but one dot on the map, but its in three states ! Okay here we go.....Our campground is North Sioux City, South Dakota. If you drive 2 miles south on the interstate you cross into Sioux City, Iowa AND if you cross the Missiouri River, which runs along side the interstate to the west, you are now in South Sioux City, Nebraska. We lost track of what state we were in all day long and some couple at Wal-Mart explained it to us. Oh and yes each of the three Sioux Cities has its own mayor ! What a hoot ! xxoo TML