Bennett County, South Dakota
Located in South Dakota, Bennett County has a population of 3,345 residents and a median age of 27.4 years, making it the #3,014 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 29.9%. The median home value is $156,400, and the median household income is $53,750, which is 28% below the national median.
Demographics
Bennett County has a population of 3,345, making it the #3,014 most populous county in the US. The median age is 27.4 years, which is 29.6% below the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Bennett County is $53,750, ranking #2,547 out of 3,222 counties — 28.5% below the national median. The poverty rate is 29.9% and unemployment stands at 10.0%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Bennett County is $156,400 (-44.5% vs national). Renters pay a median of $617/mo and the homeownership rate is 61.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Bennett County, 18.3% of adults age 25+ hold a bachelor's degree or higher, which is 45.8% below the national average, ranking #2,311 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Bennett County is 67.9 years. 23.4% of adults report poor or fair health and 14.2% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
26.9% of adults in Bennett County smoke , 43.0% are obese , and 19.0% report excessive drinking.
Adult Smoking Trend
Safety
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Families & Children
35.6% of children in Bennett County live in poverty . The teen birth rate is 37.3 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Bennett County is 54.0%. The mean commute time is 14.6 min, which is 47.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Bennett County voted Republican with a margin of 26.3%. The vote was 35.8% Dem / 62.1% Rep. Compared to 2020, the margin shifted 7.0 toward Republicans .
Vote Share Over Time
About Bennett County, South Dakota
Bennett County, South Dakota has a total population of 3,345, making it the 3,014th most populous county in the United States. The median age in Bennett County is 27.4 years, which is 29.6% below the national median of 38.9 years.
The median household income in Bennett County is $53,750, which ranks #2,547 of 3,222 counties nationwide. This is 28.5% below the national median of $75,149. The poverty rate is 29.9%, higher than the national rate of 12.6%. The unemployment rate stands at 10.0%.
The median home value in Bennett County is $156,400, 44.5% below the national median. Renters in Bennett County pay a median gross rent of $617 per month. The homeownership rate is 61.2%, compared to the national rate of 64.4%.
In Bennett County, 18.3% of residents aged 25 and older hold a bachelor's degree or higher, 45.8% below the national average of 33.7%. Health insurance coverage stands at 72.3% of the population. The average commute time for workers is 14.6 min.
Bennett County is a diverse community. The largest racial or ethnic group is American Indian (non-Hispanic) at 56.0% of the population, followed by White (non-Hispanic) (34.3%) and Hispanic or Latino (5.1%).
All data for Bennett County, South Dakota comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.