Eureka township

County:: McPherson County
County Seat:: No
Area (mi²):: 36.272
State:: South Dakota

Eureka township is located in McPherson County, South Dakota. Eureka township has a 2025 population of 190. Eureka township is currently growing at a rate of 1.06% annually and its population has increased by 7.95% since the most recent census, which recorded a population of 176 in 2020.

The average household income in Eureka township is $116,267 with a poverty rate of 3.53%. The median age in Eureka township is 44.8 years: 31 years for males, and 54.5 years for females.

Demographics

The racial composition of Eureka township includes 100% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race, Two or more races and multiracial populations.

Population by Race

White

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Race	Population	Percentage (of total)
White	85	100%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%
Two or more races	0	0%

Eureka township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Eureka township's average per capita income is $44,338. Household income levels show a median of $52,583. The poverty rate stands at 3.53%.

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	$83,750	$253,241
Married Families	$83,750	-
Households	$52,583	$116,267
Non Families	$44,412	-

$44,338

Average Income

$52,583

Median Household Income

3.53%

Poverty Rate