Illinois · FIPS 17159 · County seat: Olney
Richland County, IL GIS & Parcel Viewer
Looking for lot lines or a parcel number in Richland County, IL? The quickest route is Richland County, IL Map, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Richland County parcel map ↗
Opens richland.il.wthgis.com in a new tab. We link out and never embed or copy parcel data.
Richland County at a glance
| Official map | Richland County, IL Map |
|---|---|
| Type | County-run map |
| Website | richland.il.wthgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Olney |
| Population | 15,488 (2023 Census Bureau estimate) |
| Land area | 360 sq mi |
| FIPS code | 17159 |
Who runs this map
Richland 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.
Finding a property on this map
- Press the button above. This county's viewer runs on WTH GIS; 44 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 Richland County
Census Bureau figures put Richland County at about 15,488 people (2023 estimate) on roughly 360 square miles of land, which is about 43 residents per square mile. By population it ranks 68th of 102 counties in Illinois. Its county seat is Olney.
Counties next to Richland County
Richland County shares a border with the counties below. Each link has its own official map:
- Clay County
- Crawford County
- Edwards County
- Jasper County
- Lawrence County
- Wabash County (state list)
- Wayne County
A note on accuracy
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.