THE CHILLICOTHE LAND BRIEF
Land in the
Upper Mississippi Alluvial Plain setting.
Chillicothe township has 18 square miles of land in Peoria County. Its Census reference point is in Upper Mississippi Alluvial 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
Chillicothe and Peoria County
Chillicothe is associated with Peoria 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.
Chillicothe by land and water
The Census records 2.51 square miles of water within Chillicothe, or 12.2% of its total area. It is 10.4 percentage points higher than the 1.8% recorded for Peoria County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Chillicothe township has 3.4 times the land area of nearby Chillicothe city (5.27 square miles). These areas describe boundaries, not comparable property prices.

