South Dakota · FIPS 46057 · County seat: Hayti
Hamlin County, SD GIS & Parcel Viewer
Parcel lookups for Hamlin County start at the Hamlin 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 Hamlin County parcel map ↗
Opens 1stdistrict.org in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Hamlin County planning-district WebGIS viewer |
|---|---|
| Type | County-run map |
| Website | 1stdistrict.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Hayti |
| Population | 6,451 (2023 Census Bureau estimate) |
| Land area | 507 sq mi |
| FIPS code | 46057 |
About the official source
Hamlin County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. When we tested the link in October 2026 it opened with no login and no fee.
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.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Hamlin County
The U.S. Census Bureau estimated Hamlin County's population at 6,451 in 2023, spread over about 507 square miles of land, or roughly 13 people per square mile. By population it ranks 27th of 66 counties in South Dakota. The county seat is Hayti.
Counties next to Hamlin County
Parcels close to the edge of Hamlin County can fall in the next county over. Neighboring counties:
Maps vs. surveys
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.