THE WILLIAMSON LAND BRIEF
Land in the
Southern Illinoian Till Plain setting.
Williamson village has 1.17 square miles of land in Madison 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
Williamson and Madison County
Williamson is associated with Madison 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.
Williamson by land and water
The Census records 0.05 square miles of water within Williamson, or 3.9% of its total area. It is 0.6 percentage points higher than the 3.3% recorded for Madison County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Williamson village has 1.1 times the land area of nearby Livingston village (1.04 square miles). These areas describe boundaries, not comparable property prices.

