Flag of Illinois

Flag of Illinois

Officially » State of Illinois

State Capital » Springfield
Largest city » Chicago (the third most populous city in the USA)


  • 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).