Watertown

County:: Codington County
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.

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)
White	20,638	90.28%
Two or more races	1,064	4.65%
Native American	530	2.32%
Black or African American	277	1.21%
Other race	205	0.9%
Asian	145	0.63%

Watertown Marital Status

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