Frankfort

County:: Spink County
County Seat:: No
Area (mi²):: 0.788
State:: South Dakota

Frankfort is a city located in Spink County, South Dakota. Frankfort has a 2025 population of 127. Frankfort is currently declining at a rate of -0.78% annually and its population has decreased by -5.22% since the most recent census, which recorded a population of 134 in 2020.

The average household income in Frankfort is $82,447 with a poverty rate of 8.45%. The median age in Frankfort is 57.1 years: 58.5 years for males, and 51.6 years for females.

Demographics

The racial composition of Frankfort includes 99.3% White, and smaller percentages for other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, Two or more races and multiracial populations.

Population by Race

White

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Two or more races

Race	Population	Percentage (of total)
White	141	99.3%
Other race	1	0.7%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Two or more races	0	0%

Frankfort Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Frankfort's average per capita income is $40,833. Household income levels show a median of $61,875. The poverty rate stands at 8.45%.

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	$75,000	-
Families	$64,688	$71,678
Households	$61,875	$82,447
Non Families	-	$93,364

$40,833

Average Income

$61,875

Median Household Income

8.45%

Poverty Rate