County · code 46087
McCook CountySouth Dakota
McCook County is in South Dakota and was founded in 1873 with Salem as its county seat.
- Founded1873
- County seatSalem
- Named forEdwin Stanton McCook
- Land area574 sq mi + 2.7 sq mi water
- Population5,682 2020 Census
Where it is
McCook 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
Founded in 1873
An old deed may name a county that no longer exists, or a boundary that has since moved.
McCook County gained territory from Davison and Hanson Counties in 1879. McCook became a county in the state of South Dakota on November 2, 1889.
- 1879Gained territory McCook gained from Davison and Hanson. · Dak. Terr. Laws 1879, 13th sess., ch. 12/pp. 20-27
- 1889Became part of South Dakota McCook 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 McCook
Who publishes each layer, how good it is, and when we last checked.
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Parcels Missing
No public parcel map found for McCook County yet. Lot lines and owners of record are kept by the county (mccookcountysd.com).
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Address points Missing
No public address points layer found for McCook 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
McCook 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
McCook County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of McCook County.
See your own lot on these maps
Open McCook 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 McCook County
- When was McCook County founded?
- McCook County was founded in 1873, and named after Edwin Stanton McCook.
- What is the county seat of McCook County?
- The county seat of McCook County is Salem.
- Is there an online parcel map for McCook County?
- Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
- Has McCook County's boundary or name changed?
- Atlas of Historical County Boundaries records 2 changes for McCook County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Davison County and Hanson County.
- Is my lot in a flood zone?
- We do not have flood maps for McCook County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby