The state of Illinois is considered a part of the Midwest region of the United States of America, and rounds off the top five most populous states in the country. The states that border Illinois are Iowa, Missouri, Kentucky, Indiana, Michigan and Wisconsin. Illinois boasts one of the busiest airports in the world, in O'Hare International Airport, while the largest city in the state is Chicago, which is home to a number of historic sites and is nicknamed the "Windy City".
- Co-ordinates: 40.0000° N, 89.0000° W
- Capital: Springfield
- Population: 12.8 Million
- Major Cities: Chicago, Rochelle, Springfield
- Main Attractions: Abraham Lincoln Presidential Library and Museum, Willis Tower