Illinois · FIPS 17083 · County seat: Jerseyville
Jersey County, IL GIS & Parcel Viewer
Use this page to reach the official county parcel map for Jersey County, Illinois. The button below opens the Jersey County ArcGIS parcel map in a new tab, so you can look up parcels by address, owner or parcel number on the source site itself.
Open the Jersey County parcel map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Jersey County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Jerseyville |
| Population | 21,091 (2023 Census Bureau estimate) |
| Land area | 370 sq mi |
| FIPS code | 17083 |
Who runs this map
Jersey County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the Jersey County viewer
- Press the button above; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
Jersey County by the numbers
The U.S. Census Bureau estimated Jersey County's population at 21,091 in 2023, spread over about 370 square miles of land, or roughly 57 people per square mile. By population it ranks 55th of 102 counties in Illinois. The county seat is Jerseyville.
Neighboring counties
Jersey County shares a border with the counties below. Each link has its own official map:
Maps vs. surveys
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.