News release OSU. Fall term 2016 enrollment at Oregon State University grew 2.9 percent from last year, as stable enrollment continued at OSU’s Corvallis campus and double-digit growth continued at the OSU-Cascades campus in Bend and within OSU’s nationally ranked Ecampus online degree program. Oregon State’s overall fall enrollment is 31,303 – up 852 students from 2015 – making OSU the largest university in the state of Oregon for the third consecutive year. Oregon State’s fall enrollment includes: 24,672 students at the university’s main campus in Corvallis, an increase from fall 2015 of 205 students or 0.8 percent; 5,682 students in Ecampus, an increase of 573 students or 11.2 percent over last year; and 1,122 students at OSU-Cascades, an increase of 106 students or 10.4 percent more than a year ago.