Illinois · FIPS 17097 · County seat: Waukegan
Lake County, IL GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Lake County, IL: Tax Parcel Viewer for Lake County. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Lake County parcel map ↗
Opens maps.lakecountyil.gov in a new tab. We link out and never embed or copy parcel data.
Lake County at a glance
| Official map | Tax Parcel Viewer for Lake County |
|---|---|
| Type | County-run map |
| Website | maps.lakecountyil.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Waukegan |
| Population | 708,760 (2023 Census Bureau estimate) |
| Land area | 444 sq mi |
| FIPS code | 17097 |
About the official source
This map is published by or for Lake 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
- Press the button above to open the county's own web map.
- Search for the property or pan and zoom to it.
- Click the lot to bring up what the county publishes about it.
- Look for print or measure tools if you need a quick map or rough size.
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
Lake County had an estimated 708,760 residents in 2023, according to the Census Bureau. With about 444 square miles of land, that works out to roughly 1,596 people per square mile. By population it ranks 3rd of 102 counties in Illinois. Census maps also count about 925 square miles of water inside its boundary. Its county seat is Waukegan.
Nearby parcel maps
Lake County shares a border with the counties below. Each link has its own official map:
Before you rely on the lines
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.