Illinois · FIPS 17157 · County seat: Chester
Randolph County, IL GIS & Parcel Viewer
Parcel lookups for Randolph County start at Parcel View for Public for Randolph County. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Randolph County parcel map ↗
Opens randolphco.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Parcel View for Public for Randolph County |
|---|---|
| Type | County-run map |
| Website | randolphco.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Chester |
| Population | 29,815 (2023 Census Bureau estimate) |
| Land area | 575 sq mi |
| FIPS code | 17157 |
Where the parcel data comes from
Randolph 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 Randolph County viewer
- Click the button above and wait for the Web AppBuilder viewer to load. Some counties show a terms screen first.
- Search by street address, owner or parcel ID if the search box offers those options.
- Click a lot on the map to read its attributes.
- Turn on aerial imagery from the basemap tool and use the layer list to add things like zoning or flood zones when they're published.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
The county in brief
Census Bureau figures put Randolph County at about 29,815 people (2023 estimate) on roughly 575 square miles of land, which is about 52 residents per square mile. That makes it number 47 out of 102 Illinois counties by population. The county seat is Chester.
Nearby parcel maps
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Randolph County:
- Jackson County
- Monroe County (state list)
- Perry County
- St. Clair County (state list)
- Washington County
- Perry County, MO
- Ste. Genevieve County, MO (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.