California State University, San Bernardino is a public research university in San Bernardino, California, United States. Founded in 1965, it is part of the California State University system. The main campus sits on 441 acres (178 ha) in the University District of San Bernardino, with a branch campus of 40 acres (16 ha) in Palm Desert, California, opened in 1986. Cal State San Bernardino's fall 2020 enrollment was 19,404. In fall 2019, it had 505 full-time faculty, of which 385 were on the tenure track.