County · South Dakota
Douglas County, South Dakota
Douglas County, South Dakota. Douglas County had 2,888 residents in 2025 by the Census Bureau's estimate, up 1.9% since 2020, slower than South Dakota (+5.5%). It holds 20 places (3 cities, villages and boroughs, 14 towns and townships and 3 census-designated) and 1 census tract. GEOID 46043.
Residents, July 2025 estimate
2,888
Census Bureau estimate (no margin published)
2020 Census count: 2,835 · ACS 2020-2024: 2,828
Median household income
$86,442
±$7,842 (90% margin)
South Dakota: $75,081
Median home value
$166,900
±$22,047 (90% margin)
South Dakota: $257,400
Median gross rent
$877
±$280 (90% margin)
South Dakota: $946
How many people live in Douglas County, and is it growing?
The 2020 Census counted 2,835 residents in Douglas County. The Census Bureau estimates 2,888 for July 1, 2025, up 1.9% since 2020, slower than South Dakota (+5.5%). The 2020-2024 American Community Survey puts the population at 2,828 over 432 square miles of land.
| Measure | Douglas County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,828 | 907,428 | −101 |
| Households | 1,138±60 | 365,544 | no clear change |
| Average household size | 2.36±0.13 | 2.39 | no clear change |
| Housing units | 1,338±34 | 408,584 | −129 |
Douglas County's population since 2000
From 3,458 in 2000 to 2,888 in 2025: down 16.5%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Douglas County?
Douglas County holds 20 places: 3 cities, villages and boroughs (incorporated places), 14 towns and townships (county subdivisions with their own government) and 3 census-designated places. The largest is Armour with 725 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Armour | 698 | $81,917 |
|---|---|---|
| Corsica | 561 | $59,250 |
| Holland TownshipGEOID 4604329700 | 158 | $106,364 |
| DelmontGEOID 4616060 | 153 | $42,000 |
| Valley Township, Douglas CountyGEOID 4604366060 | 145 | $51,442 |
| Joubert TownshipGEOID 4604333060 | 137 | not published |
| Washington Township, Douglas CountyGEOID 4604369020 | 126 | $100,625 |
| Clark Township, Douglas CountyGEOID 4604312220 | 126 | not published |
| Independence Township, Douglas CountyGEOID 4604331500 | 105 | $128,594 |
| Grandview Township, Douglas CountyGEOID 4604325340 | 95 | $137,813 |
| Walnut Grove TownshipGEOID 4604368500 | 94 | not published |
| Garfield Township, Douglas CountyGEOID 4604323620 | 85 | not published |
| Lincoln Township, Douglas CountyGEOID 4604337380 | 84 | not published |
| Iowa Township, Douglas CountyGEOID 4604331820 | 82 | $250,000 or more |
| Chester Township, Douglas CountyGEOID 4604311620 | 79 | $181,719 |
| New HollandGEOID 4644940 | 77 | not published |
| Belmont Township, Douglas CountyGEOID 4604304540 | 68 | $88,125 |
| HarrisonGEOID 4627300 | 55 | not published |
| East Choteau TownshipGEOID 4604317740 | 39 | $161,875 |
| Greenwood ColonyGEOID 4626150 | 11 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Douglas County?
The median resident of Douglas County is 42.0 years old; 25.5% are under 18 and 24.5% are 65 or older. The largest group is non-Hispanic white residents at 91.8%, then Hispanic or Latino residents (of any race) at 3.0%. 3.0% of residents were born outside the United States.
| Measure | Douglas County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.0±1.8 | 38.0 | −4.7 |
| Under 18 years | 25.5%±0.8 pts | 24.2% | – |
| 65 years and over | 24.5%±1.6 pts | 18.0% | – |
| Hispanic or Latino (any race) | 3.0% | 4.8% | – |
| White alone, not Hispanic | 91.8%±0.4 pts | 79.8% | −2.6 pts |
| Black or African American alone, not Hispanic | 0.6%±1.2 pts | 2.1% | – |
| Asian alone, not Hispanic | 0.0%±0.9 pts | 1.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 2.1%±1.5 pts | 7.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.9 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.4%±1.9 pts | 4.4% | – |
| Some other race alone, not Hispanic | 0.0%±0.2 pts | 0.3% | – |
| Born outside the United States | 3.0%±1.0 pts | 4.0% | no clear change |
| Speak a language other than English at home (age 5+) | 4.1%±2.0 pts | 7.1% | – |
| Civilian veterans (age 18+) | 7.4%±2.0 pts | 7.9% | – |
| With a disability | 10.6%±2.0 pts | 12.5% | – |
| No health insurance coverage | 16.0%±4.6 pts | 9.0% | no clear change |
| High school graduate or higher (age 25+) | 90.6%±3.0 pts | 93.2% | – |
| Bachelor's degree or higher (age 25+) | 24.9%±3.7 pts | 31.9% | +9.4 pts |
| Graduate or professional degree (age 25+) | 5.6%±2.0 pts | 10.0% | – |
| Moved from another state in the past year | 1.7%±1.3 pts | 3.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Douglas County earn?
Half of Douglas County's 1,138 households earn less than $86,442 a year (±$7,842), against $75,081 in South Dakota. In 2015-2019 the median was $72,222 in 2024 dollars, so it rose by $14,220 after inflation. 11.0% of residents live below the poverty line.
| Measure | Douglas County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $86,442±$7,842 | $75,081 | +$14,220 |
| Mean household income | $107,200±$11,353 | $98,527 | – |
| Per capita income | $43,158±$4,202 | $40,550 | +$6,197 |
| People below the poverty line | 11.0%±4.7 pts | 11.9% | no clear change |
| Children under 18 below the poverty line | 16.8%±12.3 pts | 14.3% | – |
| Households receiving SNAP | 1.8%±1.1 pts | 7.9% | – |
| Households with a broadband subscription | 86.5%±4.5 pts | 89.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Douglas County?
Owners occupy 76.7% of Douglas County's occupied homes and renters 23.3%. The median owner-occupied home is valued at $166,900 by its owner (±$22,047). The median renter pays $877 a month including utilities.
| Measure | Douglas County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $166,900±$22,047 | $257,400 | +$50,723 |
| Median gross rent | $877±$280 | $946 | no clear change |
| Renters paying 35% or more of income on rent | 30.4%±22.2 pts | 30.4% | – |
| Median monthly owner costs, with a mortgage | $1,382±$170 | $1,680 | – |
| Owner-occupied homes | 76.7%±4.7 pts | 68.6% | no clear change |
| Housing units | 1,338±34 | 408,584 | −129 |
| Homeowner vacancy rate | 1.6%±1.6 pts | 0.8% | – |
| Rental vacancy rate | 4.3%±4.3 pts | 6.0% | – |
| Single-family detached homes | 89.8%±3.4 pts | 66.9% | – |
| Mobile homes | 3.1%±1.1 pts | 7.2% | – |
| Built 2020 or later | 1.6%±1.9 pts | 2.3% | – |
| Built 1939 or earlier | 38.1%±5.4 pts | 15.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Douglas County building?
Builders took permits for 7 new housing units across Douglas County in 2025 (7 single-family), 2.4 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Douglas County get to work?
78.4% of Douglas County's workers drive alone and 7.1% work from home. The average trip to work takes 19.6 minutes.
| Measure | Douglas County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.6%±3.9 pts | 67.2% | – |
| Unemployment rate | 0.5%±0.6 pts | 2.9% | – |
| Drove alone to work | 78.4%±4.2 pts | 77.0% | – |
| Carpooled | 4.7%±1.8 pts | 8.3% | – |
| Public transportation | 0.4%±0.7 pts | 0.5% | – |
| Walked | 8.3%±2.6 pts | 3.1% | – |
| Worked from home | 7.1%±3.4 pts | 9.7% | −5.9 pts |
| Mean travel time to work | 19.6 min±2.9 | 17.8 min | +4.9 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Douglas County's census tracts?
Douglas County is a single census tract.
| Tract 969646043969600 | 2,828 | $86,442 |
|---|
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Douglas County compare with South Dakota's other counties?
| Measure | Rank |
|---|---|
| Population | 49th of 66 |
| Growth 2020-2025 | 29th of 66 |
| Residents per square mile | 29th of 66 |
| Median household income | 5th of 66 |
| Median home value | 33rd of 66 |
| Median gross rent | 20th of 65 |
| Poverty rate | 33rd of 65 |
| Bachelor's degree or higher | 35th of 66 |
| Median age | 29th of 66 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Douglas County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.