The student population at Washington University in St Louis is 16,357 (8,220 undergraduate and 8,137 graduate students) . The number of students has increased by 1,669 (11.36%) over the past decade.
- Class Level: The percentage of undergraduate students at WUSTL is 50.25% which is increased by 716 over last 10 years. The graduate student population increased by 953 and it has been increasing.
- Gender Breakdown: In 2025, there were 90 male students for every 100 female students, down from 97 in 2015.
- 678 students enrolled in online degree program exclusively and the number of online students has increased by 198.68% since 2015.
Student Population Changes
The average student population over the last 11 years is 15,937 where 16,357 students are attending the school for the academic year 2024-2025.
Total enrollment fluctuated between 2016 and 2025, with 6 year-over-year increases and 3 decreases. It peaked at 17,012 students in 2023 and was lowest at 14,688 in 2016. Overall, enrollment rose from 14,688 to 16,357 students, a net gain of 1,669 (11.4%).
The following table and chart illustrate the changes in student population by gender at Washington University in St Louis since 2015.
Undergraduate Enrollment Changes
The average number of Undergraduate students over the last 11 years is 7,861 where 8,220 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 Washington University in St Louis since 2015.
Graduate Enrollment Changes
The average number of Graduate students over the last 11 years is 8,076 where 8,137 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 Washington University in St Louis since 2015.
Enrollment by Race/Ethnicity Changes
The percentage of white students is 34.95% and the percentage of black students is 7.10% at Washington University in St Louis. 14.02% of enrolled students is Asian. Hispanic students comprise 8.97% of the student body.
Over the past 10 years, the racial composition has shifted. The percentage of white students decreased from 50.14% to 34.95%. Asian enrollment grew from 13.20% to 14.02%. Black student enrollment increased from 5.81% to 7.10%. Hispanic student representation expanded from 5.02% to 8.97%.
The overall racial diversity, measured by the Census Bureau Diversity Index, is 0.8430 which indicates that highly diverse. This increased from 0.7245 a decade ago, suggesting that racial diversity has improved.
The following table and chart illustrate the student population trends by race/ethnicity at Washington University in St Louis over the past 11 years (2015-2025).
Distance Learning (Online Courses) Enrollment Changes
678 students are enrolled in online degree programs exclusively for the academic year 2024-2025, which is 4% of total students. The number of online students has increased 198.68% since 2015. The following table and chart illustrate the changes in the online student population by enrolled type at Washington University in St Louis from 2015 to 2025.