Cornwall township Flag

Cornwall township

County:
Spink County
County Seat:
No
Area (mi²):
35.525
State:
South Dakota

Cornwall township is located in Spink County, South Dakota. Cornwall township has a 2025 population of 36. Cornwall township is currently declining at a rate of -2.7% annually and its population has decreased by -5.26% since the most recent census, which recorded a population of 38 in 2020.

The average household income in Cornwall township is $156,952 with a poverty rate of 0%.The median age in Cornwall township is 50.7 years: 50.1 years for males, and 72.3 years for females.

36
Total Population
1
Density (mi²)
-1 -2.7%
Growth

Cornwall township Population

Cornwall township Population

Data after 2023 is projected based on recent change

Demographics

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

Population by Race

Race
Population
Percentage (of total)
White91100%

Cornwall township Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Cornwall township's average per capita income is $90,795. Household income levels show a median of $101,932. The poverty rate stands at 0%.

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
Married Families$154,000-
Households$101,932$156,952
Families$101,932$156,952
Non Families--

$90,795

Average Income

$101,932

Median Household Income

0%

Poverty Rate

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)