South Dakota · FIPS 46135 · County seat: Yankton
Yankton County, SD GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Yankton County, SD: the Yankton County Beacon site. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Yankton County parcel map ↗
Opens beacon.schneidercorp.com in a new tab. We link out and never embed or copy parcel data.
Yankton County's county seat is Yankton; the county covers about 521 square miles of land and had an estimated 23,517 residents in 2023, according to the U.S. Census Bureau. The parcel map linked above is a Beacon site from Schneider Geospatial; its search page lets you look up a property by address or parcel number. Deeds and other land records are recorded by the Yankton County Register of Deeds.
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Map and county facts
| Official map | Yankton County Beacon site |
|---|---|
| Type | County-run map |
| Website | beacon.schneidercorp.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Yankton |
| Population | 23,517 (2023 Census Bureau estimate) |
| Land area | 521 sq mi |
| FIPS code | 46135 |
Who runs this map
Yankton County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. As of our October 2026 test, anyone could open it without signing in or paying.
Searching for a parcel, step by step
- Open the link to the Beacon site from Schneider Geospatial. If a terms or disclaimer window appears, agree to it to continue.
- Use the search bar to look up a street address, an owner's name or a parcel ID. Beacon sites usually also have a dedicated property search page.
- Click a lot on the map and then open its report for assessment and property details.
- Use the layer and basemap controls to add aerial photos or other layers the county publishes.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
The county in brief
Census Bureau figures put Yankton County at about 23,517 people (2023 estimate) on roughly 521 square miles of land, which is about 45 residents per square mile. Among South Dakota's 66 counties, it is the 9th largest by population. Its county seat is Yankton.
Counties next to Yankton County
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Yankton County:
Before you rely on the lines
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.