County · code 46043
Douglas CountySouth Dakota
Douglas County is a county in South Dakota, with its seat in Armour. It was created in 1873.
- Founded1873
- County seatArmour
- Named forStephen A. Douglas
- Land area432 sq mi + 1.9 sq mi water
- Population2,835 2020 Census
- Parcels mapped4,531 checked 16 October 2026
Where it is
Douglas on the map of South Dakota
South Dakota has 66 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1873 from Charles Mix. County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Douglas County was created on January 10, 1873, by Dakota Territory from Charles Mix County. It was named after Stephen A. Douglas. When South Dakota became a state on November 2, 1889, Douglas became one of its counties.
- 1873Douglas County created Douglas created by Dakota Territory in present South Dakota from Charles Mix. · Dak. Terr. Laws 1872, 10th sess., ch. 17/p. 38
- 1889Became part of South Dakota Douglas became a county in the state of South Dakota. · U.S. Stat., vol. 25, ch. 180[1889]/pp. 676-684; U.S. Stat., vol. 26, no. 5/pp. 1548-1549; Swindler, 9:107-109; Van Zandt, 134
Land and parcels
What the maps cover in Douglas
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 4,531 parcels from Douglas County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Missing
No public address points layer found for Douglas County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Douglas by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
Inside a city or town, permits usually come from that city rather than the county.
Zoning and code
County government
- County government
The official website of Douglas County.
See your own lot on these maps
Open Douglas County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Douglas County
- When was Douglas County founded?
- Douglas County was founded in 1873, formed from Charles Mix. County, and named after Stephen A. Douglas.
- What is the county seat of Douglas County?
- The county seat of Douglas County is Armour.
- Is there an online parcel map for Douglas County?
- Yes. Douglas County publishes a parcel map of 4,531 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Douglas County's boundary or name changed?
- Douglas County was created in 1873 from Charles Mix. County. Since then the Atlas of Historical County Boundaries records 1 later change.
- Is my lot in a flood zone?
- We do not have flood maps for Douglas County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby