South Dakota · FIPS 46037 · County seat: Webster
Day County, SD GIS & Parcel Viewer
Day County, South Dakota parcel data lives on the Day County planning-district WebGIS viewer. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Day County parcel map ↗
Opens gis.districtiii.org in a new tab. We link out and never embed or copy parcel data.
Day County at a glance
| Official map | Day County planning-district WebGIS viewer |
|---|---|
| Type | County-run map |
| Website | gis.districtiii.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Webster |
| Population | 5,451 (2023 Census Bureau estimate) |
| Land area | 1,028 sq mi |
| FIPS code | 46037 |
Where the parcel data comes from
It is a county-level map: Day 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.
Finding a property on this map
- 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.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Day County
Census Bureau figures put Day County at about 5,451 people (2023 estimate) on roughly 1,028 square miles of land, which is about 5.3 residents per square mile. By population it ranks 32nd of 66 counties in South Dakota. The county seat is Webster.
Nearby parcel maps
Day County shares a border with the counties below. Each link has its own official map:
- Brown County
- Clark County
- Codington County
- Grant County
- Marshall County
- Roberts County
- Spink County (state list)
A note on accuracy
Treat the map as a guide, not a boundary survey: parcel outlines are often shifted a bit from the real corners. A licensed surveyor settles exact lines.