County · code 46009
Bon Homme CountySouth Dakota
Bon Homme County is a county in South Dakota with its seat in Tyndall. It was created in 1862 as part of Dakota Territory.
- Founded1862
- County seatTyndall
- Land area564 sq mi + 18 sq mi water
- Population7,003 2020 Census
- Parcels mapped8,879 checked 14 October 2026
Where it is
Bon Homme 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 1862
An old deed may name a county that no longer exists, or a boundary that has since moved.
Bon Homme County was created on April 5, 1862, by Dakota Territory from non-county area. On November 2, 1889, Bon Homme became a county in the state of South Dakota.
- 1862Bon Homme County created Bon Homme created by Dakota Territory in present South Dakota from non-county area. · Dak. Terr. Laws 1862, 1st sess., ch. 12/p. 242
- 1889Became part of South Dakota Bon Homme 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 Bon Homme
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 8,879 parcels from Bon Homme County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 14 October 2026 -
Address points Missing
No public address points layer found for Bon Homme 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
Bon Homme 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
Bon Homme 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 Bon Homme County.
See your own lot on these maps
Open Bon Homme 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 Bon Homme County
- When was Bon Homme County founded?
- Bon Homme County was founded in 1862.
- What is the county seat of Bon Homme County?
- The county seat of Bon Homme County is Tyndall.
- Is there an online parcel map for Bon Homme County?
- Yes. Bon Homme County publishes a parcel map of 8,879 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Bon Homme County's boundary or name changed?
- Bon Homme County was created in 1862. 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 Bon Homme County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby