Free Union County, South Dakota Topo Maps & Elevations

Free printable Union County, SD topographic maps, GPS coordinates, photos, & more for popular landmarks in Union County including Dakota Dunes, North Sioux City, and Beresford.

County Borders


Union County, South Dakota covers an area of approximately 461 square miles with a geographic center of 42.80299592°(N), -96.64085417°(W).

These are the far north, south, east, and west coordinates of Union County, South Dakota, comprising a rectangle that encapsulates it. Please note that not all coordinates inside this rectangle will fall inside of Union County, South Dakota, as it (most likely) doesn't fill up the entire rectangle.

North: 43.08444214°(N)
South: 42.48111343°(N)
East: -96.44995117°(W)
West: -96.80691528°(W)


According to data gathered by the Shuttle Radar Topography Mission. The lowest elevation in Union County is 336 meters (1,102 feet). This ranks Union County 10th in terms of lowest elevations when compared to a total of 66 counties in South Dakota.

Union County's highest elevation is 493 meters (1,617 feet) which ranks it 58th in terms of highest elevations when compared to a total of 66 counties in South Dakota.

US Topo Maps covering Union County, SD

The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. Union County is covered by the following US Topo Map quadrants.

Akron PDF Order Print
Alcester PDF Order Print
Alcester SE PDF Order Print
Alsen PDF Order Print
Beresford PDF Order Print
Burbank PDF Order Print
Chatsworth PDF Order Print
Elk Point PDF Order Print
Elk Point NE PDF Order Print
Hawarden North PDF Order Print
Hawarden South PDF Order Print
Jackson PDF Order Print
Jefferson PDF Order Print
Nora PDF Order Print
Ponca PDF Order Print
Richland PDF Order Print
Sioux City North PDF Order Print
Sioux City South PDF Order Print
Vermillion SE PDF Order Print

Things to See In Union County, SD

Browse the listing of the top geological and geographic features in Union County.

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Places to Visit In Union County, South Dakota

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