Union Flag

Union

County:
McCook County
County Seat:
No
Area (mi²):
36.068
State:
South Dakota

Union is located in McCook County, South Dakota. Union has a 2025 population of 127 . Union is currently declining at a rate of 0% annually and its population has increased by 4.1% since the most recent census, which recorded a population of 122 in 2020.

The average household income in Union is $101,004 with a poverty rate of 2.1%. The median age in Union is 45.5 years: 39.2 years for males, and 49.5 years for females. For every 100 females there are 180.8 males.

127
Total Population
4
Density (mi²)

Union Population

Union Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Union includes 97.95% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

White (97.95%)

Two or more races (2.05%)

Race
Population
Percentage (of total)
White14397.95%
Two or more races32.05%

Union Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Union's average per capita income is $52,500. Household income levels show a median of $83,750. The poverty rate stands at 2.1%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Households$83,750$101,004
Families$82,292$93,967
Married Families$82,292-
Non Families--

$52,500

Average Income

$83,750

Median Household Income

2.1%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)