Illinois is a key state in the United State's Midwest region, often called the "Heartland."

Illinois is an integral part of the Midwest, one of the four primary regions of the U.S. The state is geographically located in the central portion of the country and has a diverse economy, including agriculture, manufacturing, and technology. Its largest city, Chicago, is the region's major cultural and economic hub, further solidifying Illinois' importance to the Midwest. Known for its strong educational institutions and vibrant history, Illinois embodies Midwestern culture's core values and characteristics.