Marshall County Flag

Marshall County

State:
South Dakota
County Seat:

Marshall County's estimated 2025 population is 4,444 with a growth rate of 0.61% in the past year according to the most recent United States census data. Marshall County is the 37th largest county in South Dakota. The 2010 population was 4,643 and has seen a growth of -4.29% since that time.

4,444
Total Population
5
Population Density (mi²)
37
Population Rank (State)
27 0.61%
Annual Population Growth

Marshall County Population

Marshall County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Marshall County includes 86.11% White, 6.5% Native American, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White3,75086.11%
Native American2836.5%
Two or more races2325.33%
Other race791.81%
Black or African American110.25%

Marshall County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marshall County's average per capita income is $43,467. Household income levels show a median of $72,500. The poverty rate stands at 7.86%.

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$107,059-
Families$103,542$134,111
Households$72,500$101,999
Non Families$38,807$44,776

$43,467

Average Income

$72,500

Median Household Income

7.86%

Poverty Rate