Union County topographic maps
Click on a map to view its topography, its elevation and its terrain.
North Sioux City
United States > South Dakota > Union County
North Sioux City, Big Sioux Township, Union County, South Dakota, United States
Average elevation: 1,142 ft
Dakota Dunes
United States > South Dakota > Union County
Dakota Dunes, Big Sioux Township, Union County, South Dakota, 57049, United States
Average elevation: 1,119 ft
North Sioux City
United States > South Dakota > Union County > North Sioux City > North Sioux City
North Sioux City, Union County, South Dakota, 51109, United States
Average elevation: 1,158 ft