Lewis University had a total enrollment of 7,011 students in 2024. The full-time enrollment at Lewis University is 4,914 students and the part-time enrollment is 2,097. This means that 70.1% of students enrolled at Lewis University are enrolled full-time.

The enrolled student population at Lewis University, both undergraduate and graduate, is 43.3% White, 20.5% Hispanic or Latino, 6.35% Black or African American, 5.68% Asian, 2.51% Two or More Races, 0.143% American Indian or Alaska Native, and 0.0998% Native Hawaiian or Other Pacific Islanders.

Students enrolled at Lewis University in full-time Undergraduate programs are most commonly White Male (27.5%), followed by White Female (25.5%) and Hispanic or Latino Female (15.3%). Students enrolled in full-time Graduate programs are most commonly White Female (14.1%), followed by White Male (4.95%) and Hispanic or Latino Female (4.92%).