Map of Union County, South Dakota

Union County is the southernmost county in the U.S. state of South Dakota. As of the 2020 United States Census, the population was 16,811, making it the 13th most populous county in South Dakota. Its county seat has been Elk Point since April 30, 1865. Originally named Cole County, its name was changed to Union on January 7, 1864, because of Civil War sentiment.

Union County is part of the Sioux City, IA–NE–SD Metropolitan Statistical Area. The Progressive Farmer rated Union County second in the “2006 Best Place to Live Survey” in the U.S., because “its schools are good, its towns neat and its people friendly”.

Union County overview:
Name:Union County
FIPS code:46-127
State:South Dakota
Founded:April 10, 1862
Seat:Elk Point
Largest city:Dakota Dunes
Total Area:467 sq mi (1,210 km²)
Land Area:461 sq mi (1,190 km²)
Total Population:16,811
Population Density:36/sq mi (14/km²)
Time zone:UTC−6 (Central)
Summer Time Zone (DST):UTC−5 (CDT)
Website:unioncountysd.org

Union County location map. Where is Union County?

Union County location on the U.S. Map. Where is Union County.
Location of Union County in the the United States.
Union County location on the South Dakota map. Where is Union County.
Location of Union County in South Dakota.

History

Founded on April 10, 1862, as Cole County, it was renamed Union County on January 7, 1864, when its boundaries were changed to encompass land previously part of neighboring Lincoln County. The county seat was moved from Richland to Elk Point on April 30, 1865.

Union County Road Map

Union CountyStreet Map.
Street map of Union County, South Dakota. Source: OpenStreetMap (OSM)
Union CountyMap
Union Countypolitical map.

Geography

Union County lies on the southeast corner of South Dakota. Its east boundary line abuts the west boundary line of the State of Iowa (across the Big Sioux River), and its south/southwest boundary line abuts the north boundary line of the State of Nebraska (across the Missouri River). The Brule Creek flows southeasterly across the central part of the county, emptying into the Big Sioux. The county terrain consists of rolling hills, devoted to agriculture except around built-up areas. The terrain slopes to the south and east; its highest point is near its northwest corner, at 1,509′ (460m) ASL. The county has a total area of 467 square miles (1,210 km), of which 461 square miles (1,190 km) is land and 6.6 square miles (17 km) (1.4%) is water. It is the fifth-smallest county in South Dakota by area.

Major highways

  • Interstate 29
  • South Dakota Highway 11
  • South Dakota Highway 19
  • South Dakota Highway 46
  • South Dakota Highway 48
  • South Dakota Highway 50
  • South Dakota Highway 105

Adjacent counties

Protected areas

  • Adams Homestead and State Nature Preserve
  • Bent River State Game Production Area
  • Bolton State Game Production Area
  • Cusick State game Production Area
  • Cut Off Bend State Game Production Area
  • Missouri National Recreational River (partial)
  • Petry-Conway State Game Production Area
  • Petry/Harmelink State Game Production Area
  • Ryan State Game Production Area
  • Union Grove State Park
  • Warren Wilderness State Game Production Area

Lakes

  • Burbank Lake (partial)
  • McCook Lake
  • Mud Lake

Union County Topographic Map

Topographic Map of Union County, South Dakota
Union County Topo map.

Union County Satellite Map

Satellite Map of Union County, South Dakota
Union County satellite map.

Union County Outline Map

Outline Map of Union County, South Dakota
Union County outline map.

See also

Map of South Dakota State and its subdivision: Map of other states:
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