THE CAHOKIA LAND BRIEF
Land in the
Southern Illinoian Till Plain setting.
Cahokia township has 36.6 square miles of land in Macoupin County. Its Census reference point is in Southern Illinoian Till Plain, within Interior River Valleys and Hills.
Broad terraced river valleys contrast with wooded slopes and dissected glacial plains. Bottomland settings and upland oak landscapes occur close together across the Interior River Valleys and Hills.
Regional context: Interior River Valleys and Hills ↗ · Classification at the Census reference point
Cahokia and Macoupin County
Cahokia is associated with Macoupin County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Cahokia by land and water
The Census records 0.27 square miles of water within Cahokia, or 0.7% of its total area. It is 0.2 percentage points higher than the 0.5% recorded for Macoupin County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Cahokia township has 40.2 times the land area of nearby Eagarville village (0.91 square miles). These areas describe boundaries, not comparable property prices.

