Illinois · FIPS 17113 · County seat: Bloomington
McLean County, IL GIS & Parcel Viewer
Here is the direct link to the county parcel map covering McLean County, IL: the McLean County ArcGIS parcel map. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the McLean County parcel map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
McLean County at a glance
| Official map | McLean County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Bloomington |
| Population | 170,441 (2023 Census Bureau estimate) |
| Land area | 1,183 sq mi |
| FIPS code | 17113 |
About the official source
It is a county-level map: McLean County or the company it hires keeps the parcel layer up to date. As of our October 2026 test, anyone could open it without signing in or paying.
Finding a property on this map
- Open the link. This viewer is an ArcGIS Experience Builder app, so its layout is custom to the publisher.
- Look for a search box or search widget and type in a street address or parcel ID.
- Click a parcel to see its details in a pop-up or side panel.
- Check the toolbar for a layer list or basemap switcher if you want aerials or other layers.
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 McLean County
McLean County had an estimated 170,441 residents in 2023, according to the Census Bureau. With about 1,183 square miles of land, that works out to roughly 144 people per square mile. Among Illinois's 102 counties, it is the 13th largest by population. The county seat is Bloomington.
Neighboring counties
McLean County shares a border with the counties below. Each link has its own official map:
- Champaign County
- De Witt County
- Ford County
- Livingston County
- Logan County
- Piatt County (state list)
- Tazewell County
- Woodford County
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.