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As of fall 2020, 2,521 students were enrolled at Viterbo. There were 1,630 undergraduates and 891 graduate students. Viterbo has a student/faculty ratio of 11:1 and an average class size of 16.
== Athletics ==
Viterbo's athletic teams are called the V-Hawks. The university is a member of the National Association of Intercollegiate Athletics (NAIA), primarily competing in the Chicagoland Collegiate Athletic Conference (CCAC) since the 2024–25 academic year. The V-Hawks previously competed in the North Star Athletic Association (NSAA) from 2015–16 to 2023–24, as well as in the defunct Midwest Collegiate Conference (MCC) from 1989–90 to 2014–15, when the conference dissolved.
Viterbo competes in 20 intercollegiate varsity sports. Men's sports include baseball, basketball, bowling, cross country, golf, soccer, track & field (indoor and outdoor) and volleyball; women's sports include basketball, bowling, cross country, golf, soccer, softball, track & field (indoor and outdoor) and volleyball; and co-ed sports …