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, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Native American

Black or African American

Other race

Asian

Native Hawaiian or Pacific Islander

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%
Native Hawaiian or Pacific Islander	0	0%

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