How many people live in Douglas County, SD?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 2,800 people living in Douglas County, SD. That makes Douglas County the 48th-most populous county in South Dakota. It is home to 0.3% of people living in the state.
2.85K
population of Douglas County, SD (2024)
0.3%
County share of the South Dakota population (2024)
About 2,800 people lived in Douglas County, SD in 2024.
Population estimates, 2000–2024
What are Douglas County, SD’s age demographics?
About 716 Douglas County, SD residents are aged 65 and older in 2024. That represents 25.1% of its population. For comparison, the age group represents 18.9% of South Dakota’s population and 18% in the US overall.
Another 780 Douglas County, SD residents, or 27.4% of the population, were children under 18. For comparison, the age group represents 24% of South Dakota’s population and 21.6% in the US overall.
A lower share of Douglas County, SD's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Douglas County, SD’s racial and ethnic demographics?
Non-Hispanic white residents make up 91% of the Douglas County, SD population, higher than the national share of 57.5%. Douglas County, SD also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (2.5%) than the US overall (0.72%).
In contrast, Douglas County’s Hispanic population accounts for 3.9%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.63% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Douglas County, SD has a higher share of a non-Hispanic white population than South Dakota as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Douglas County, SD is Armour with about 712 residents in 2024.
Cities and towns in Douglas County, SD ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Armour | 712 |
| 2. | Corsica | 556 |
| 3. | Holland | 169 |
| 4. | Delmont | 154 |
| 5. | Joubert | 144 |
| 6. | Independence | 140 |
| 7. | Valley | 134 |
| 8. | Washington | 127 |
| 9. | Walnut Grove | 114 |
| 10. | Clark | 94 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
