Plymouth State University (PSU), formerly Plymouth State College, is a public university in the towns of Plymouth and Holderness, New Hampshire. As of fall 2020, Plymouth State University enrolls 4,491 students (3,739 undergraduate students and 752 graduate students). The school was founded as Plymouth Normal School in 1871. Since that time, it has evolved to a teachers college, a state college, and finally to a state university in 2003. PSU is part of the University System of New Hampshire.