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.

Demographics

The racial composition of Cornwall 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	91	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%

Cornwall township Marital Status

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