Kosciusko township

County:: Day County
County Seat:: No
Area (mi²):: 39.605
State:: South Dakota

Kosciusko township is located in Day County, South Dakota. Kosciusko township has a 2025 population of 184. Kosciusko township is currently growing at a rate of 0.55% annually and its population has increased by 3.37% since the most recent census, which recorded a population of 178 in 2020.

The average household income in Kosciusko township is $103,831 with a poverty rate of 4.26%. The median age in Kosciusko township is 60.8 years: 63.2 years for males, and 60.2 years for females.

Demographics

The racial composition of Kosciusko township includes 96.1% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	271	96.1%
Two or more races	11	3.9%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Kosciusko township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Kosciusko township's average per capita income is $38,333. Household income levels show a median of $95,682. The poverty rate stands at 4.26%.

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
Families	$117,857	$133,768
Married Families	$117,857	-
Households	$95,682	$103,831
Non Families	-	$38,511

$38,333

Average Income

$95,682

Median Household Income

4.26%

Poverty Rate