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Union County, South Dakota facts for kids

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Union County
Chicago and North Western Railway depot in Beresford, South Dakota
Chicago and North Western Railway depot in Beresford, South Dakota
Map of South Dakota highlighting Union County
Location within the U.S. state of South Dakota
Map of the United States highlighting South Dakota
South Dakota's location within the U.S.
Country  United States
State  South Dakota
Founded April 10, 1862
Seat Elk Point
Largest city North Sioux City
Area
 • Total 467 sq mi (1,210 km2)
 • Land 461 sq mi (1,190 km2)
 • Water 6.6 sq mi (17 km2)  1.4%
Population
 (2020)
 • Total 16,811
 • Estimate 
(2021)
16,872 Increase
 • Density 36.00/sq mi (13.899/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional district At-large

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, IANE–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".

Geography

According to the U.S. Census Bureau, the county has a total area of 467 square miles (1,210 km2), of which 461 square miles (1,190 km2) is land and 6.6 square miles (17 km2) (1.4%) is water. It is the fifth-smallest county in South Dakota by area.

Major highways

  • I-29.svg Interstate 29
  • SD 11.svg South Dakota Highway 11
  • SD 19.svg South Dakota Highway 19
  • SD 46.svg South Dakota Highway 46
  • SD 48.svg South Dakota Highway 48
  • SD 50.svg South Dakota Highway 50
  • SD 105.svg South Dakota Highway 105

Adjacent counties

Protected areas

  • Missouri National Recreational River (part)
  • Adams Homestead and Nature Preserve
  • Union Grove State Park

Demographics

Historical population
Census Pop.
1870 3,507
1880 6,813 94.3%
1890 9,130 34.0%
1900 11,153 22.2%
1910 10,676 −4.3%
1920 11,099 4.0%
1930 11,480 3.4%
1940 11,675 1.7%
1950 10,792 −7.6%
1960 10,197 −5.5%
1970 9,643 −5.4%
1980 10,938 13.4%
1990 10,189 −6.8%
2000 12,584 23.5%
2010 14,399 14.4%
2020 16,811 16.8%
2021 (est.) 16,872 17.2%
US Decennial Census
1790-1960 1900-1990
1990-2000 2010-2020

2010 census

As of the 2010 United States Census, there were 14,399 people, 5,756 households, and 4,043 families in the county. The population density was 31.3 inhabitants per square mile (12.1/km2). There were 6,280 housing units at an average density of 13.6 per square mile (5.3/km2). The racial makeup of the county was 95.5% white, 0.9% Asian, 0.7% black or African American, 0.6% American Indian, 0.1% Pacific islander, 0.7% from other races, and 1.6% from two or more races. Those of Hispanic or Latino origin made up 2.1% of the population. In terms of ancestry, 42.0% were German, 18.2% were Norwegian, 17.7% were Irish, 7.9% were English, 6.8% were Swedish, and 3.7% were American.

Of the 5,756 households, 32.8% had children under the age of 18 living with them, 58.9% were married couples living together, 7.5% had a female householder with no husband present, 29.8% were non-families, and 25.1% of all households were made up of individuals. The average household size was 2.49 and the average family size was 2.98. The median age was 40.2 years.

The median income for a household in the county was $59,889 and the median income for a family was $71,308. Males had a median income of $42,702 versus $31,993 for females. The per capita income for the county was $33,783. About 3.9% of families and 4.9% of the population were below the poverty line, including 4.3% of those under age 18 and 10.5% of those age 65 or over.

Communities

Cities

Census-designated places

Unincorporated communities

Ghost towns

  • Emmet
  • Gothland
  • Hill Side
  • Texas
  • Morganfield

Townships

The county is divided into thirteen townships:

  • Alcester
  • Big Sioux
  • Big Springs
  • Brule
  • Civil Bend
  • Elk Point
  • Emmet
  • Jefferson
  • Prairie
  • Quincy
  • Sioux Valley
  • Spink
  • Virginia

Unorganized territory

The county contains one area of unorganized territory: Richland.

See also

Kids robot.svg In Spanish: Condado de Union (Dakota del Sur) para niños

Black History Month on Kiddle
Famous African-American Pilots:
Bessie Coleman
Spann Watson
Jill E. Brown
Sherman W. White
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