Southern Illinois University (SIU or SIUC) is a public research university in Carbondale, Illinois. Founded in 1869, SIU is the oldest and flagship campus of the Southern Illinois University system. The university enrolls students from all 50 states as well as more than 100 countries. It is classified among "R2: Doctoral Universities – High research activity". SIU offers 3 associate, 100 bachelor's, 73 master's, and 36 Ph.D programs in addition to professional degrees in architecture, law, and medicine.