Cortlandt township

County:: Edmunds County
County Seat:: No
Area (mi²):: 34.33
State:: South Dakota

Cortlandt township is located in Edmunds County, South Dakota. Cortlandt township has a 2025 population of 625. Cortlandt township is currently declining at a rate of -0.32% annually but its population has increased by 1.46% since the most recent census, which recorded a population of 616 in 2020.

The average household income in Cortlandt township is $152,182 with a poverty rate of 1.62%. The median age in Cortlandt township is 48 years: 38.6 years for males, and 55.8 years for females.

Demographics

The racial composition of Cortlandt 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	944	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%

Cortlandt township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Cortlandt township's average per capita income is $61,563. Household income levels show a median of $103,750. The poverty rate stands at 1.62%.

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	$145,000	$175,217
Married Families	$134,000	-
Households	$103,750	$152,182
Non Families	$69,583	$79,860

$61,563

Average Income

$103,750

Median Household Income

1.62%

Poverty Rate