Union township Flag

Union township

County:
Day County
County Seat:
No
Area (mi²):
35.59
State:
South Dakota

Union township is located in Day County, South Dakota. Union township has a 2025 population of 66. Union township is currently declining at a rate of -2.94% annually and its population has decreased by -5.71% since the most recent census, which recorded a population of 70 in 2020.

The average household income in Union township is $107,041 with a poverty rate of 0%.The median age in Union township is 64.4 years: 64.2 years for males, and 69 years for females.

66
Total Population
2
Density (mi²)
-2 -2.94%
Growth

Union township Population

Union township Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Union township includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White61100%

Union township Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Union township's average per capita income is $34,792. Household income levels show a median of $53,750. The poverty rate stands at 0%.

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$53,750$107,041
Families-$136,740
Married Families--
Non Families--

$34,792

Average Income

$53,750

Median Household Income

0%

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)