High Quality Content by WIKIPEDIA articles! The University of Denver (DU), founded in 1864 is the oldest private university in the Rocky Mountain Region of the United States.The University of Denver is a coeducational, four-year university in Denver, Colorado. DU currently enrolls approximately 11,400 students, divided between graduate and undergraduate programs. The 125-acre (0.51 km2) main campus is a designated arboretum and is located primarily in the University Neighborhood, about seven miles (11 km) south of downtown Denver.