Lehigh University (LU) is a private research university in Bethlehem, Pennsylvania, United States. The university was established in 1865 by businessman Asa Packer. Lehigh University's undergraduate programs have been coeducational since the 1971–72 academic year. As of 2022, the university had 5,911 undergraduate students and 1,781 graduate students. The university is classified as "Doctoral Universities R1: Very High Research Activity".