Illinois · FIPS 17023 · County seat: Marshall
Clark County, IL GIS & Parcel Viewer
Parcel lookups for Clark County start at the Clark County Beacon site. This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Clark County parcel map ↗
Opens beacon.schneidercorp.com in a new tab. We link out and never embed or copy parcel data.
Clark County at a glance
| Official map | Clark County Beacon site |
|---|---|
| Type | County-run map |
| Website | beacon.schneidercorp.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Marshall |
| Population | 15,088 (2023 Census Bureau estimate) |
| Land area | 501 sq mi |
| FIPS code | 17023 |
Who runs this map
It is a county-level map: Clark County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the Clark County viewer
- Open the link to the Beacon site from Schneider Geospatial. If a terms or disclaimer window appears, agree to it to continue.
- Use the search bar to look up a street address, an owner's name or a parcel ID. Beacon sites usually also have a dedicated property search page.
- Click a lot on the map and then open its report for assessment and property details.
- Use the layer and basemap controls to add aerial photos or other layers the county publishes.
Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.
About Clark County
Census Bureau figures put Clark County at about 15,088 people (2023 estimate) on roughly 501 square miles of land, which is about 30 residents per square mile. By population it ranks 71st of 102 counties in Illinois. Marshall serves as the county seat.
Counties next to Clark County
Clark County shares a border with the counties below. Each link has its own official map:
- Coles County
- Crawford County
- Cumberland County
- Edgar County
- Jasper County
- Sullivan County, IN
- Vigo County, IN
Maps vs. surveys
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.