Officially » State of Illinois
- Population » 12,812,508 people (6th largest in the US)
- Languages spoken » English (Official) (80.8%), Spanish (14.9%)
- 149,997 km2 (57,915 sq mi)
- Highest elevation » Charles Mound at 376.4 m (1,235 ft)
- Lies between Wisconsin to the north, Iowa and Missouri to the west, Kentucky to the east and south, and Indiana to the east and Michigan (via a water boundary in Lake Michigan).