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 2026 population of 614. Cortlandt township is currently declining at a rate of -1.13% annually and its population has decreased by -1.29% since the most recent census, which recorded a population of 622 in 2020.

The median household income in Cortlandt township is $103,611 with a poverty rate of 2.1%. The median age in Cortlandt township is 52.7 years: 41.9 years for males, and 57.3 years for females. For every 100 females there are 112.8 males.

614
Total Population
18
Density (mi²)
-7 -1.13%
Growth

Cortlandt township Population

Cortlandt township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026614-7-1.13%
2025621-7-1.11%
2024628-7-1.1%
2023635-7-1.09%
2022642101.58%
2021632101.61%
202062210.16%
201961060.99%
2018604-10-1.63%
2017614-1-0.16%
2016615-10-1.6%
201562560.97%
2014619-5-0.8%
201362450.81%
2012619-1-0.16%
2011620-8-1.27%
201062500%

Median Age

Overall: 52.7 years
Female: 57.3 years
Male: 41.9 years

Cortlandt township Adults

There are 622 adults, (142 of whom are seniors) in Cortlandt township.

Sex Ratio

Female: 392 (47%)
Male: 442 (53%)

Demographics

The racial composition of Cortlandt township includes 96.88% White, and smaller percentages for Asian, Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White80896.88%
Asian141.68%
Two or more races121.44%
Race
Population ↓
Percentage (of total)
White80896.88%
Asian141.68%
Two or more races121.44%

Cortlandt township Marital Status

Economics and Income Statistics

Cortlandt township 's average per capita income is $48,750. Household income levels show a median of $103,611. The poverty rate stands at 2.1%.

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$119,375$178,887
Married Families$116,964-
Households$103,611$149,514
Non Families$72,875$81,381

$48,750

Average Income

$103,611

Median Household Income

2.1%

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)