Illinois · FIPS 17095 · County seat: Galesburg
Knox County, IL GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Knox County, IL: the Knox County ArcGIS parcel map. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Knox County parcel map ↗
Opens knoxcountyil.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Knox County at a glance
| Official map | Knox County ArcGIS parcel map |
|---|---|
| Type | County-run map |
| Website | knoxcountyil.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Galesburg |
| Population | 48,411 (2023 Census Bureau estimate) |
| Land area | 716 sq mi |
| FIPS code | 17095 |
About the official source
This map is published by or for Knox County itself, so it reflects the local parcel layer rather than a third-party copy. When we tested the link in October 2026 it opened with no login and no fee.
Finding a property on this map
- Open the official link. The viewer is built with ArcGIS Web AppBuilder; if a disclaimer pops up, accept it to continue.
- Use the search widget, usually in the upper left, to find a street address or parcel ID.
- Click a parcel to open its info window.
- The widget bar holds extras such as the layer list, basemap switcher, measure and print tools.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
Knox County by the numbers
The U.S. Census Bureau estimated Knox County's population at 48,411 in 2023, spread over about 716 square miles of land, or roughly 68 people per square mile. Among Illinois's 102 counties, it is the 30th largest by population. The county seat is Galesburg.
Neighboring counties
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Knox County:
Maps vs. surveys
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.