Pennington County Flag

Pennington County

State:
South Dakota
County Seat:

Pennington County's estimated 2025 population is 119,097 with a growth rate of 1.36% in the past year according to the most recent United States census data. Pennington County is the 2nd largest county in South Dakota. The 2010 population was 101,253 and has seen a growth of 17.62% since that time.

119,097
Total Population
43
Population Density (miĀ²)
2
Population Rank (State)
1.6K 1.36%
Annual Population Growth

Pennington County Population

Pennington County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Pennington County includes 80.33% White, 7.05% Native American, and smaller percentages for Black or African American, other race, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Native American

Black or African American

Other race

Asian

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White90,04080.33%
Two or more races10,1299.04%
Native American7,9057.05%
Black or African American1,4631.31%
Other race1,2881.15%
Asian1,2311.1%
Native Hawaiian or Pacific Islander250.02%

Pennington County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Pennington County's average per capita income is $44,318. Household income levels show a median of $70,768. The poverty rate stands at 12.04%.

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$101,586$131,104
Families$90,248$118,504
Households$70,768$95,438
Non Families$41,119$58,887

$44,318

Average Income

$70,768

Median Household Income

12.04%

Poverty Rate