Iowa State University again posted record enrollment this fall with 33,241 students, up from last year's record of 31,040. Undergraduate enrollment is 27,659, also a record. That number is contributed to by the university's largest-ever freshman class of 6,089. The University of Iowa announced an overall enrollment of 31,065, down slightly from 31,498 in 2012. Undergraduate enrollment was 21,974, down from 21,999 a year ago.The University of Northern Iowa's enrollment was 12,159, a 114-student decrease from last year, according to The Des Moines Register.