San Diego State University had a total enrollment of 41,137 students in 2024. The full-time enrollment at San Diego State University is 35,588 students and the part-time enrollment is 5,549. This means that 86.5% of students enrolled at San Diego State University are enrolled full-time.

The enrolled student population at San Diego State University, both undergraduate and graduate, is 36.4% Hispanic or Latino, 33.1% White, 12.9% Asian, 7.12% Two or More Races, 3.45% Black or African American, 0.248% Native Hawaiian or Other Pacific Islanders, and 0.17% American Indian or Alaska Native.

Students enrolled at San Diego State University in full-time Undergraduate programs are most commonly Hispanic or Latino Female (21.5%), followed by White Female (19.7%) and White Male (14.7%). Students enrolled in full-time Graduate programs are most commonly Hispanic or Latino Female (26%), followed by White Female (19.7%) and Hispanic or Latino Male (11%).