The student population at Adelphi University is 7,603 (5,325 undergraduate and 2,278 graduate students) . The number of students has increased by 347 (4.78%) over the past decade.
- Class Level: The percentage of undergraduate students at Adelphi is 70.04% which is increased by 473 over last 10 years. The graduate student population decreased by 126 and it has been decreasing.
- Gender Breakdown: In 2025, there were 46 male students for every 100 female students, up from 40 in 2015.
- 670 students enrolled in online degree program exclusively and the number of online students has increased by 294.12% since 2015.
Student Population Changes
The average student population over the last 11 years is 7,642 where 7,603 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 8,146 students in 2019 and was lowest at 7,252 in 2023. Overall, enrollment rose from 7,256 to 7,603 students, a net gain of 347 (4.8%).
The following table and chart illustrate the changes in student population by gender at Adelphi University since 2015.
Undergraduate Enrollment Changes
The average number of Undergraduate students over the last 11 years is 5,195 where 5,325 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 Adelphi University since 2015.
Graduate Enrollment Changes
The average number of Graduate students over the last 11 years is 2,447 where 2,278 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 Adelphi University since 2015.
Enrollment by Race/Ethnicity Changes
The percentage of white students is 41.38% and the percentage of black students is 10.82% at Adelphi University. 11.48% of enrolled students is Asian. Hispanic students comprise 20.98% of the student body.
Over the past 10 years, the racial composition has shifted. The percentage of white students decreased from 54.00% to 41.38%. Asian enrollment grew from 8.74% to 11.48%. Black student enrollment decreased from 11.14% to 10.82%. Hispanic student representation expanded from 14.00% to 20.98%.
The overall racial diversity, measured by the Census Bureau Diversity Index, is 0.7590 which indicates that quite diverse. This increased from 0.6684 a decade ago, suggesting that racial diversity has improved.
The following table and chart illustrate the student population trends by race/ethnicity at Adelphi University over the past 11 years (2015-2025).
Distance Learning (Online Courses) Enrollment Changes
670 students are enrolled in online degree programs exclusively for the academic year 2024-2025, which is 9% of total students. The number of online students has increased 294.12% since 2015. The following table and chart illustrate the changes in the online student population by enrolled type at Adelphi University from 2015 to 2025.