THE LAKE COUNTY LAND BRIEF
Land in the
Kettle Moraines setting.
Lake County has 443.7 square miles of land in Illinois. 3 mapped landscape regions meet across Lake County: Kettle Moraines, Valparaiso-Wheaton Morainal Complex, Chiwaukee Prairie Region.
Glacial till plains support a transition between hardwood forest, oak savanna and prairie landscapes. Rolling farmland and woodland reflect this meeting of ecological regions in southeastern Wisconsin.
Regional context: Southeastern Wisconsin Till Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Lake County intersects 3 mapped regional units. The largest mapped shares are:
- Kettle Moraines68.7%
- Valparaiso-Wheaton Morainal Complex19.5%
- Chiwaukee Prairie Region11.7%
Central Corn Belt Plains in Lake County
Glaciated plains historically supported tallgrass prairie mixed with oak and hickory woodland. Dark prairie soils and broad farming landscapes distinguish much of the Central Corn Belt.
Read the regional source ↗Finding your parcel within Lake County
The atlas lists 78 cities, towns, townships, and Census communities associated with Lake County, including Warren, Vernon, Libertyville. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Lake County by land and water
The Census records 924.7 square miles of water within Lake County, or 67.6% of its total area. That share is close to Lake County’s 67.6%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Lake County has 36.3 times the land area of nearby Highland Park city (12.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Cook County, McHenry County within Illinois. A tract near one of these lines should be matched to the county identifier on its own records.

