THE ST. JACOB LAND BRIEF
Land in the
Southern Illinoian Till Plain setting.
St. Jacob township has 35.8 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
St. Jacob and Madison County
St. Jacob 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.
St. Jacob by land and water
The Census records 0.2 square miles of water within St. Jacob, or 0.6% of its total area. It is 2.7 percentage points lower 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, St. Jacob township has 42.2 times the land area of nearby St. Jacob village (0.85 square miles). These areas describe boundaries, not comparable property prices.

