College of DuPage is a public community college with its main campus in Glen Ellyn, Illinois. The college also owns and operates satellite campuses in Addison, Carol Stream, Naperville and Westmont. With more than 20,000 students, the College of DuPage is the second largest provider of undergraduate education in Illinois, after University of Illinois Urbana-Champaign. The college serves students residing in Illinois' Community College District 502.