Northern Illinois University is a state-owned institution headquartered in the US. Founded in 1895, it employs approximately 6,150 people. The university functions as a public research university in DeKalb, Illinois, United States. It was established by Illinois Governor John P. Altgeld, with an initial mission to provide the state with college-educated teachers. In addition to its main campus in DeKalb, it operates satellite centers in Chicago, Naperville, Rockford, and Oregon, Illinois.