Illinois, known as the Prairie State, joined the Union in 1818 as the 21st state. Illinois is home to Chicago, one of the largest cities in the nation, and to the history of Abraham Lincoln.
Quick Facts
- Capital: Springfield
- Largest city: Chicago
- Nickname: Prairie State
- Statehood: 1818, the 21st state
Places to Visit
Visit Millennium Park in Chicago, the Abraham Lincoln Presidential Library in Springfield and Starved Rock State Park.
Pin Tip
Planning a trip to Illinois? Check state park and national park websites for seasonal hours, reservations and road conditions before you go.