How many students at Illinois State? For the academic year 2024-2025, a total of 21,546 students have enrolled in Illinois State University with 19,107 undergraduate and 2,439 graduate students.

By gender, 8,998 male and 12,548 female students are attending the school.

It has more students compared to similar colleges (16,875 students on average - public Research University (high research activity)).

1,302 students are enrolled exclusively, and 7,853 students are enrolled in some online courses.

You can check the student demographics by gender ratio, race/ethnicity, age distribution, and online enrollment.


Student Population by Gender

Illinois State University has a total of 21,546 enrolled students for the academic year 2024-2025. 19,107 students have enrolled in undergraduate programs and 2,439 students joined graduate programs.

By gender, 8,998 male and 12,548 female students (the male-female ratio is 42:58) are attending the school.

Total Student Enrolled By Gender
TotalUndergraduateGraduate
Total21,54619,1072,439
Men8,9988,270728
Women12,54810,8371,711
Illinois State University 2025 Student Population by Gender and Race chartIllinois State University 2025 Undergraduate Enrollment by Gender and Race chartIllinois State University 2025 Graduate Enrollment by Gender and Race chart

Student Distribution by Race/Ethnicity

By race/ethnicity, 13,650 White, 2,775 Black, and 560 Asian students out of a total of 21,546 are attending at Illinois State University. Comprehensive enrollment statistic data by race/ethnicity is shown in the chart below (academic year 2024-2025 data).

Illinois State University is moderately diverse with a diversity index of 56.2% measured by Census Bureau Diversity Index. The institution shows moderate representation of multiple racial and ethnic groups.

Race/Ethnicity Distribution (Total)
RaceTotalMenWomen
American Indian or Native American1688
Asian560250310
Black2,7751,1341,641
Hispanic2,8951,1931,702
Native Hawaiian or Other Pacific Islanders1248
White13,6505,6827,968
Two or more races840352488
Race Unknown18585100
Race/Ethnicity Distribution (Undergraduate)
RaceTotalMenWomen
American Indian or Native American1587
Asian499234265
Black2,5981,0731,525
Hispanic2,7211,1441,577
Native Hawaiian or Other Pacific Islanders1147
White12,1655,3106,855
Two or more races781334447
Race Unknown1487375
Race/Ethnicity Distribution (Graduate)
RaceTotalMenWomen
American Indian or Native American101
Asian611645
Black17761116
Hispanic17449125
Native Hawaiian or Other Pacific Islanders101
White1,4853721,113
Two or more races591841
Race Unknown371225
Illinois State University 2025 Student Population by Gender and Race chartIllinois State University 2025 Undergraduate Enrollment by Gender and Race chartIllinois State University 2025 Graduate Enrollment by Gender and Race chart

Student Age Distribution

By age, Illinois State has 88 students under 18 years old and 10 students over 65 years old. There are 19,117 students under 25 years old, and 2,429 students over 25 years old out of 21,546 total students.

In undergraduate programs, 88 students are younger than 18 and 4 students are older than 65. Illinois State has 18,302 undergraduate students aged under 25 and 805 students aged 25 and over.

It has 815 graduate students aged under 25 and 1,624 students aged 25 and over.

Student Age Distribution (Total)
AgeTotalMenWomen
Under 18884543
18-197,7834,7023,081
20-218,0034,5223,481
22-243,2431,6751,568
25-29987567420
30-34454288166
35-3933424292
40-49462353109
50-6418214537
Over 651091
Student Age Distribution (Undergraduate)
AgeTotalMenWomen
Under 18884543
18-197,7834,7023,081
20-217,9574,4883,469
22-242,4741,1291,345
25-29368159209
30-341357857
35-39977027
40-4913911029
50-64625210
Over 65440
Student Age Distribution (Graduate)
AgeTotalMenWomen
20-21463412
22-24769546223
25-29619408211
30-34319210109
35-3923717265
40-4932324380
50-641209327
Over 65651
Illinois State University 2025 Student Population by Age chartIllinois State University 2025 Student Population Age Diversity Pie chartIllinois State University 2025 Undergraduate Enrollment by Age chartIllinois State University 2025 Undergraduate Enrollment Age Diversity Pie chartIllinois State University 2025 Graduate Enrollment by Age chartIllinois State University 2025 Graduate Enrollment Age Diversity Pie chart

Online Student Enrollment

Distance learning, also called online education, is very attractive to students, especially those who want to continue education and work in the field. At Illinois State University, 1,302 students are enrolled exclusively in online courses and 7,853 students are enrolled in some online courses.

1,212 students who live in Illinois or the jurisdiction in which the school is located are enrolled exclusively in online courses and 90 students live in another State or outside of the United States.

Online Student Population
All StudentsEnrolled Exclusively Online CoursesEnrolled in Some Online Courses
All Students21,5461,3027,853
Undergraduate19,1074207,530
Graduate2,439882323
Online Student Population by Locality
Illinois ResidentsOther States in U.S.Outside of U.S.
All Students1,212846
Undergraduate410100
Graduate802746
Illinois State University 2025 Online Student Population chart

Transfer-in Students (Undergraduate)

Among 19,107 enrolled in undergraduate programs, 1,788 students have transferred-in from other institutions. The percentage of transfer-in students is 9.36%.1,605 students have transferred in as full-time status and 183 students transferred in as part-time status.

Transfer-in Students (Undergraduate)
Number of Students
Regular Full-time16,464
Transfer-in Full-time1,605
Regular Part-time855
Transfer-in Part-time183

Illinois State Enrollment Frequently Asked Questions

For the academic year 2024-2025, 21,546 students are enrolled at Illinois State.
19,107 undergraduate and 2,439 graduate students are enrolled at Illinois State.
8,998 male (41.76%) and 12,548 female (58.24%) students are attending Illinois State.
613 international students (2.85%) are enrolled at Illinois State, including 169 undergraduate and 444 graduate students.
Illinois State has a student population that is predominantly White: 13,650 White (63.35%), 2,775 Black (12.88%), and 560 Asian (2.60%) students are enrolled.
88 students are under 18 and 10 students are over 65 years old.
1,302 students are enrolled exclusively online, and 7,853 students take some online courses.

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