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 and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
Native American1,31875.01%
White38121.68%
Two or more races412.33%
Other race170.97%

Buffalo County Marital Status

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

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