Watertown Flag

Watertown

County Seat:
No
Area (mi²):
18.439
State:
South Dakota

Watertown is a city located in Codington County, South Dakota. Watertown has a 2025 population of 23,597. Watertown is currently growing at a rate of 0.79% annually and its population has increased by 4.05% since the most recent census, which recorded a population of 22,679 in 2020.

The average household income in Watertown is $81,097 with a poverty rate of 10.69%.The median age in Watertown is 39.4 years: 38.7 years for males, and 40.3 years for females.

23.6K
Total Population
1,280
Density (mi²)
184 0.79%
Growth

Watertown Population

Watertown Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Watertown includes 90.28% White, and smaller percentages for Native American, Black or African American, other race, Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White20,63890.28%
Two or more races1,0644.65%
Native American5302.32%
Black or African American2771.21%
Other race2050.9%
Asian1450.63%

Watertown Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Watertown's average per capita income is $44,668. Household income levels show a median of $62,721. The poverty rate stands at 10.69%.

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$95,229-
Families$84,485$100,183
Households$62,721$81,097
Non Families$44,211$55,380

$44,668

Average Income

$62,721

Median Household Income

10.69%

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)