THE CHATHAM LAND BRIEF
Land in the
Illinois/Indiana Prairies setting.
Chatham township has 37.2 square miles of land in Sangamon County. Its Census reference point is in Illinois/Indiana Prairies, within Central Corn Belt Plains.
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.
Regional context: Central Corn Belt Plains ↗ · Classification at the Census reference point
Chatham and Sangamon County
Chatham is associated with Sangamon 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.
Chatham by land and water
The Census records 0.03 square miles of water within Chatham, or 0.1% of its total area. It is 0.9 percentage points lower than the 1% recorded for Sangamon County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Chatham township has 5 times the land area of nearby Chatham village (7.52 square miles). These areas describe boundaries, not comparable property prices.

