Castlewood Flag

Castlewood

County:
Hamlin County
County Seat:
No
Area (mi²):
1.15
State:
South Dakota

Castlewood is a city located in Hamlin County, South Dakota. Castlewood has a 2025 population of 712. Castlewood is currently growing at a rate of 0.42% annually and its population has increased by 2.15% since the most recent census, which recorded a population of 697 in 2020.

The average household income in Castlewood is $90,463 with a poverty rate of 3.04%.The median age in Castlewood is 36.9 years: 36.2 years for males, and 39.5 years for females.

712
Total Population
619
Density (mi²)
3 0.42%
Growth

Castlewood Population

Castlewood Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Castlewood includes 88.62% White, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White67088.62%
Two or more races709.26%
Other race111.46%
Black or African American50.66%

Castlewood Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Castlewood's average per capita income is $47,500. Household income levels show a median of $87,768. The poverty rate stands at 3.04%.

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$93,333$95,303
Married Families$92,188-
Households$87,768$90,463
Non Families$46,477$75,838

$47,500

Average Income

$87,768

Median Household Income

3.04%

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)