Erwin Flag

Erwin

County Seat:
No
Area (mi²):
0.476
State:
South Dakota

Erwin is a town located in Kingsbury County, South Dakota. Erwin has a 2025 population of 39 . Erwin is currently declining at a rate of 0% annually and its population has increased by 2.63% since the most recent census, which recorded a population of 38 in 2020.

The average household income in Erwin is $57,761 with a poverty rate of 6%. The median age in Erwin is 55.5 years: 59 years for males, and 47.5 years for females. For every 100 females there are 92.3 males.

39
Total Population
82
Density (mi²)

Erwin Population

Erwin Population

Data after 2023 is projected based on recent change

Demographics

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

Population by Race

White (100%)

Race
Population
Percentage (of total)
White50100%

Erwin Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Erwin's average per capita income is $28,542. Household income levels show a median of $53,750. The poverty rate stands at 6%.

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$58,125$56,073
Married Families$58,125-
Households$53,750$57,761
Non Families-$60,414

$28,542

Average Income

$53,750

Median Household Income

6%

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)