Illinois's 18th congressional district is located in the central part of the state. It includes cities such as Peoria, Bloomington, and Champaign. The district is primarily rural, with a mix of agricultural areas and small towns, and it plays a significant role in the state's economy. The district has been represented by various members of Congress since its establishment. It is known for its diverse population and community interests, which include agriculture, education, and healthcare. The current representative is a member of the Republican Party, reflecting the district's political leanings.