The University of Illinois at Urbana-Champaign (UIUC, U of I or simply Illinois) is a coeducational public research university in the state of Illinois, USA. It is the oldest and largest campus in the University of Illinois system.
The university comprises 18 Colleges that offer more than 150 programs of study. Additionally, the university operates an extension that serves 2.7 million registrants per year around the state of Illinois and beyond. The campus holds over 286 buildings on 1,468 acres (6 km²) in the twin cities of Champaign and Urbana, and boasts an annual budget of nearly $1.5 billion. As of 30 June 2007, the University of Illinois Foundation—a systemwide endowment—totals at $2.197 billion. U.S. News & World Report ranked Illinois as the eighth-best public university in the United States in 2008.