The Champaign-Urbana Metropolitan Area, also known as Champaign, is a region in east central Illinois. The region is home to roughly 150,000 residents and encompasses the cities of Champaign, Urbana, and the village of Savoy. Students at the University of Illinois at Urbana-Champaign are included in this estimate of residents due to the fact that they are typically discounted from the official city census as they are not permanent residents.

Champaign-Urbana is home to University of Illinois at Urbana-Champaign, the flagship campus of the University of Illinois system, as well as the University of Illinois Research Park. It has become a major research center and houses many companies and research entities, including: iCyt (a biotechnology company); the Illinois Natural History Survey; the Illinois State Geological Survey; Motorola; the National Center for Supercomputing Applications; Phonak; PowerWorld; and the Science Applications International Corporation.