Douglas County, South Dakota Demographics 2026
Douglas County, South Dakota has a population of 2,828, the 49th most populous county in South Dakota. The median household income is $86,442 and the median home value is $166,900. The poverty rate is 11.1%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Douglas County Quick Facts
How Douglas County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 2,823 | 2,828 | +0.2% |
| Median household income | $78,125 | $86,442 | +10.6% |
| Median home value | $125,000 | $166,900 | +33.5% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 35 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Douglas County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Corsica | 699 | $59,250 | 8.2% | $162,500 |
| Armour | 675 | $81,917 | 11.1% | $105,500 |
| Delmont | 183 | $42,000 | 18.0% | $86,700 |
| New Holland | 4 | N/A | 0.0% | N/A |
Explore South Dakota Rankings
Population Overview
Douglas County is located in South Dakota with a total population of 2,828. It is the 49th most populous county out of 66 in South Dakota. The county encompasses 4 Census-designated places.
Age Demographics
The median age in Douglas County is 42.0 years. This is 11% higher than the state median of 38.0 years. 12.5% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Douglas County is $86,442. This is 15% higher than the state median of $75,081. It is also 7% higher than the national median of $80,734. The poverty rate stands at 11.1%. This is 7% lower than the state poverty rate of 11.9%. The unemployment rate is 0.5%. This is 84% lower than the state rate of 2.9%. The median home value is $166,900. Housing costs are 35% lower than the state median of $257,400. With a home-value-to-income ratio of just 1.9x, Douglas County is one of the most affordable housing markets in the area. 76.7% of occupied housing units are owner-occupied. This homeownership rate is 12% higher than the state average of 68.6%.
Race & Ethnicity
Douglas County has a predominantly White (non-Hispanic) population, comprising 91.8% of all residents. Hispanic or Latino residents account for 3.0%. The Black or African American population (0.6%) is well below the state average of 2.1%.
Education
24.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 22% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.6%.
Data Sources & Methodology
All figures for Douglas County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against South Dakota and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Douglas County, South Dakota?
Douglas County has a population of 2,828, making it the 49th most populous county in South Dakota.
What is the median income in Douglas County?
The median household income in Douglas County is $86,442 with a poverty rate of 11.1%.
How many cities are in Douglas County, South Dakota?
Douglas County contains 4 Census-designated places.