South Dakota · FIPS 46009 · County seat: Tyndall
Bon Homme County, SD GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Bon Homme County, SD: the Bon Homme County planning-district WebGIS viewer. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Bon Homme County parcel map ↗
Opens gis.districtiii.org in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Bon Homme County planning-district WebGIS viewer |
|---|---|
| Type | County-run map |
| Website | gis.districtiii.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Tyndall |
| Population | 7,065 (2023 Census Bureau estimate) |
| Land area | 564 sq mi |
| FIPS code | 46009 |
Where the parcel data comes from
It is a county-level map: Bon Homme County or the company it hires keeps the parcel layer up to date. As of our October 2026 test, anyone could open it without signing in or paying.
Searching for a parcel, step by step
- Open the official link; the map is hosted on planning-district WebGIS, a vendor platform used by 43 counties in our directory.
- Accept any disclaimer, then use the search tool to find a street address, owner or parcel ID.
- Click a parcel to view its attributes.
- Use the layer or basemap controls to add aerials and other layers where the county provides them.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
Bon Homme County by the numbers
Bon Homme County had an estimated 7,065 residents in 2023, according to the Census Bureau. With about 564 square miles of land, that works out to roughly 13 people per square mile. Among South Dakota's 66 counties, it is the 26th largest by population. Its county seat is Tyndall.
Neighboring counties
Bon Homme County shares a border with the counties below. Each link has its own official map:
Maps vs. surveys
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.