Illinois is a state located in the Midwestern region of the United States. It is the sixth most populous state in the country and is known for its diverse economy, which includes agriculture, manufacturing, and finance. The state is home to several major cities, including Chicago, which is the third-largest city in the country. Illinois is also known for its natural beauty, with several state parks and forests offering opportunities for outdoor recreation. The state has a rich cultural history, with significant contributions to music, literature, and art. Illinois is also home to several prestigious universities, including the University of Illinois and Northwestern University.