Frederick

County:: Brown County
County Seat:: No
Area (mi²):: 1.354
State:: South Dakota

Frederick is a town located in Brown County, South Dakota. Frederick has a 2025 population of 201. Frederick is currently declining at a rate of -0.99% annually and its population has decreased by -5.63% since the most recent census, which recorded a population of 213 in 2020.

The average household income in Frederick is $73,145 with a poverty rate of 12.92%. The median age in Frederick is 52.1 years: 50.6 years for males, and 52.9 years for females.

Demographics

The racial composition of Frederick includes 96.07% White, and smaller percentages for Asian, Two or more races, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Asian

Two or more races

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	171	96.07%
Asian	5	2.81%
Two or more races	2	1.12%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Frederick Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Frederick's average per capita income is $42,500. Household income levels show a median of $81,071. The poverty rate stands at 12.92%.

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	$92,500	-
Families	$91,750	$81,311
Households	$81,071	$73,145
Non Families	$48,750	$53,424

$42,500

Average Income

$81,071

Median Household Income

12.92%

Poverty Rate