Cortlandt township Flag

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.

625
Total Population
18
Density (mi²)
-2 -0.32%
Growth

Cortlandt township Population

Cortlandt township Population

Data after 2023 is projected based on recent change

Demographics

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

Population by Race

Race
Population
Percentage (of total)
White944100%

Cortlandt township Marital Status

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

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

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)