Buffalo County Flag

Buffalo County

State:
South Dakota
County Seat:

Buffalo County's estimated 2025 population is 1,944 with a growth rate of 1.57% in the past year according to the most recent United States census data. Buffalo County is the 58th largest county in South Dakota. The 2010 population was 1,934 and has seen a growth of 0.52% since that time.

1,944
Total Population
4
Population Density (mi²)
58
Population Rank (State)
30 1.57%
Annual Population Growth

Buffalo County Population

Buffalo County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Buffalo County includes 75.01% Native American, 21.68% White, and smaller percentages for Two or more races, other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Native American

White

Two or more races

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
Native American1,31875.01%
White38121.68%
Two or more races412.33%
Other race170.97%
Black or African American00%
Asian00%
Native Hawaiian or Pacific Islander00%

Buffalo County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Buffalo County's average per capita income is $35,354. Household income levels show a median of $47,000. The poverty rate stands at 32.49%.

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$83,571-
Families$53,681$62,863
Households$47,000$54,977
Non Families$14,926$36,808

$35,354

Average Income

$47,000

Median Household Income

32.49%

Poverty Rate