The student population at California Institute of Technology is 2,430 (987 undergraduate and 1,443 graduate students) . The number of students has increased by 175 (7.76%) over the past decade.
- Class Level: The percentage of undergraduate students at Caltech is 40.62% which is decreased by 14 over last 10 years. The graduate student population increased by 189 and it has been increasing.
- Gender Breakdown: In 2025, there were 150 male students for every 100 female students, down from 206 in 2015.
- All students have enrolled in on-campus classes (California Institute of Technology does not offer online degree/certificate program).
Student Population Changes
The average student population over the last 11 years is 2,313 where 2,430 students are attending the school for the academic year 2024-2025.
Total enrollment fluctuated between 2016 and 2025, with 5 year-over-year increases and 4 decreases. It peaked at 2,463 students in 2024 and was lowest at 2,233 in 2019. Overall, enrollment rose from 2,255 to 2,430 students, a net gain of 175 (7.8%).
The following table and chart illustrate the changes in student population by gender at California Institute of Technology since 2015.
Undergraduate Enrollment Changes
The average number of Undergraduate students over the last 11 years is 971 where 987 students are attending the Undergraduate school for the academic year 2024-2025. The following table and chart illustrate the changes in Undergraduate enrollment by attending status and gender at California Institute of Technology since 2015.
Graduate Enrollment Changes
The average number of Graduate students over the last 11 years is 1,343 where 1,443 students are attending the Graduate school for the academic year 2024-2025. The following table and chart illustrate the changes in Graduate enrollment by attending status and gender at California Institute of Technology since 2015.
Enrollment by Race/Ethnicity Changes
The percentage of white students is 23.05% and the percentage of black students is 2.80% at California Institute of Technology. 22.63% of enrolled students is Asian. Hispanic students comprise 11.40% of the student body.
Over the past 10 years, the racial composition has shifted. The percentage of white students decreased from 31.75% to 23.05%. Asian enrollment declined from 26.87% to 22.63%. Black student enrollment increased from 1.15% to 2.80%. Hispanic student representation expanded from 7.63% to 11.40%.
The overall racial diversity, measured by the Census Bureau Diversity Index, is 0.8777 which indicates that highly diverse. This increased from 0.8200 a decade ago, suggesting that racial diversity has improved.
The following table and chart illustrate the student population trends by race/ethnicity at California Institute of Technology over the past 11 years (2015-2025).
Distance Learning (Online Courses) Enrollment Changes
California Institute of Technology does not offer online degree/certificate programs. All Students have enrolled in on-campus programs.