Illinois · FIPS 17177 · County seat: Freeport
Stephenson County, IL GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Stephenson County, IL: WinGISPublic for Stephenson County. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Stephenson County parcel map ↗
Opens wingis.org in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | WinGISPublic for Stephenson County |
|---|---|
| Type | County-run map |
| Website | wingis.org |
| Access | Free, no login (checked Oct 2026) |
| County seat | Freeport |
| Population | 43,105 (2023 Census Bureau estimate) |
| Land area | 564 sq mi |
| FIPS code | 17177 |
Where the parcel data comes from
It is a county-level map: Stephenson 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 in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
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 Stephenson County
Stephenson County had an estimated 43,105 residents in 2023, according to the Census Bureau. With about 564 square miles of land, that works out to roughly 76 people per square mile. That makes it number 33 out of 102 Illinois counties by population. The county seat is Freeport.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Stephenson County:
- Carroll County
- Jo Daviess County
- Ogle County
- Winnebago County
- Green County, WI (state list)
- Lafayette County, WI (state list)
A note on accuracy
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.