Madison

County:: Lake County
County Seat:: No
Area (mi²):: 4.616
State:: South Dakota

Madison is a city located in Lake County, South Dakota. Madison has a 2025 population of 6,045. Madison is currently declining at a rate of -0.38% annually and its population has decreased by -1.85% since the most recent census, which recorded a population of 6,159 in 2020.

The average household income in Madison is $79,612 with a poverty rate of 11.21%. The median age in Madison is 39.6 years: 33.9 years for males, and 42.6 years for females.

Demographics

The racial composition of Madison includes 96.49% White, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	5,942	96.49%
Two or more races	96	1.56%
Black or African American	55	0.89%
Native American	33	0.54%
Asian	26	0.42%
Native Hawaiian or Pacific Islander	6	0.1%
Other race	0	0%

Madison Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Madison's average per capita income is $40,509. Household income levels show a median of $62,180. The poverty rate stands at 11.21%.

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	$92,542	-
Families	$74,778	$95,525
Households	$62,180	$79,612
Non Families	$41,198	$59,304

$40,509

Average Income

$62,180

Median Household Income

11.21%

Poverty Rate