University of California-San Diego had a total enrollment of 44,256 students in 2024. The full-time enrollment at University of California-San Diego is 42,601 students and the part-time enrollment is 1,655. This means that 96.3% of students enrolled at University of California-San Diego are enrolled full-time.

The enrolled student population at University of California-San Diego, both undergraduate and graduate, is 30.9% Asian, 22.9% Hispanic or Latino, 17.7% White, 5.95% Two or More Races, 1.67% Black or African American, 0.0926% American Indian or Alaska Native, and 0.0587% Native Hawaiian or Other Pacific Islanders.

Students enrolled at University of California-San Diego in full-time Undergraduate programs are most commonly Asian Female (18%), followed by Asian Male (16.5%) and Hispanic or Latino Female (16%). Students enrolled in full-time Graduate programs are most commonly White Male (10.4%), followed by White Female (10.2%) and Asian Female (8.26%).