Illinois · FIPS 17155 · County seat: Hennepin
Putnam County, IL GIS & Parcel Viewer
Putnam County, Illinois parcel data lives on Putnam Co, Illinois Map. Open it below in a new tab, then use the short steps on this page to find a property fast.
Open the Putnam County parcel map ↗
Opens putnam.il.wthgis.com in a new tab. We link out and never embed or copy parcel data.
Putnam County at a glance
| Official map | Putnam Co, Illinois Map |
|---|---|
| Type | County-run map |
| Website | putnam.il.wthgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Hennepin |
| Population | 5,561 (2023 Census Bureau estimate) |
| Land area | 160 sq mi |
| FIPS code | 17155 |
Who runs this map
It is a county-level map: Putnam 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 WTH GIS, a vendor platform used by 44 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.
The county in brief
The U.S. Census Bureau estimated Putnam County's population at 5,561 in 2023, spread over about 160 square miles of land, or roughly 35 people per square mile. Among Illinois's 102 counties, it is the 94th largest by population. Hennepin serves as the county seat.
Nearby parcel maps
Parcels close to the edge of Putnam County can fall in the next county over. Neighboring counties:
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.