to
Update
is a city in Shelby County, Illinois, along the Kaskaskia River. The population was 4,971 at the 2000 census, with a 2006 U.S. Census population estimate of 4,711.
It is the county seat of Shelby County. Shelby Memorial Hospital, located in town, is the county's only hospital.
According to the United States Census Bureau, the city has a total area of 3.9 square miles (10.0 km²), of which, 3.7 square miles (9.6 km²) of it is land and 0.2 square miles (0.5 km²) of it (4.90%) is water.
Shelbyville was founded in 1827 and named in honor of Isaac Shelby, hero of the Revolutionary War and Governor of Kentucky. The history of Shelbyville begins with Barnett Bone, a Tennessean who, in 1835, built a log cabin along the Kaskaskia River. His cabin eventually became the county courthouse. The first businesses were blacksmith shops, a general store and stage coach stop, and a grist mill.
The terminal moraine of the Wisconsin Glacier is located near Shelbyville. This is referred to as the Shelbyville Moraine.