South Dakota · FIPS 46111 · County seat: Woonsocket
Sanborn County, SD GIS & Parcel Viewer
Parcel lookups for Sanborn County start at the Sanborn County planning-district WebGIS viewer. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Sanborn 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 | Sanborn County planning-district WebGIS viewer |
|---|---|
| Type | County-run map |
| Website | gis.districtiii.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Woonsocket |
| Population | 2,399 (2023 Census Bureau estimate) |
| Land area | 569 sq mi |
| FIPS code | 46111 |
Who runs this map
It is a county-level map: Sanborn County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
Searching for a parcel, step by step
- Press the button above. This county's viewer runs on planning-district WebGIS; 43 counties in our directory use the same service.
- Find the search option and look up a property, or zoom in on the map.
- Click a lot to see its details.
- Check the toolbar for layers, measuring and printing.
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.
About Sanborn County
Census Bureau figures put Sanborn County at about 2,399 people (2023 estimate) on roughly 569 square miles of land, which is about 4.2 residents per square mile. That makes it number 53 out of 66 South Dakota counties by population. Woonsocket serves as the county seat.
Neighboring counties
Parcels close to the edge of Sanborn County can fall in the next county over. Neighboring counties:
Maps vs. surveys
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.