The student population at Illinois State University is 21,546 (19,107 undergraduate and 2,439 graduate students) . The number of students has increased by 786 over the past decade.
The percentage of undergraduate students at Illinois State is 88.68% which is increased by 681 over last 10 years. The graduate student population increased by 105 and it has been increasing.
The female to male ratio is 1.39 to 1 which means that female students enrolled more than male students.
1,302 students enrolled in online degree program exclusively and the number of online students has increased by 308.15% since 2015.
The average student population over the last 11 years is 20,827 where 21,546 students are attending the school for the academic year 2024-2025.
88.68% of total students is undergraduate students and 11.32% students is graduate students. The number of undergraduate students has increased by 681 and the graduate enrollment has increased by 105 over past 10 years.
The female to male ratio is 1.39 to 1 and it means that there are more female students enrolled in Illinois State than male students.
The following table and chart illustrate the changes in student population by gender at Illinois State University since 2015.
| Year | Total | Undergraduate | Graduate | ||||
|---|---|---|---|---|---|---|---|
| Total | Men | Women | Total | Men | Women | ||
| 2015-16 | 20,760 | 18,426 | 8,311 | 10,115 | 2,334 | 828 | 1,506 |
| 2016-17 | 21,039 279 | 18,643 217 | 8,316 5 | 10,327 212 | 2,396 62 | 848 20 | 1,548 42 |
| 2017-18 | 20,784 -255 | 18,330 -313 | 8,211 -105 | 10,119 -208 | 2,454 58 | 848 | 1,606 58 |
| 2018-19 | 20,635 -149 | 18,107 -223 | 8,076 -135 | 10,031 -88 | 2,528 74 | 866 18 | 1,662 56 |
| 2019-20 | 20,878 243 | 18,250 143 | 8,141 65 | 10,109 78 | 2,628 100 | 925 59 | 1,703 41 |
| 2020-21 | 20,720 -158 | 17,987 -263 | 7,806 -335 | 10,181 72 | 2,733 105 | 949 24 | 1,784 81 |
| 2021-22 | 20,233 -487 | 17,674 -313 | 7,595 -211 | 10,079 -102 | 2,559 -174 | 897 -52 | 1,662 -122 |
| 2022-23 | 20,683 450 | 18,055 381 | 7,854 259 | 10,201 122 | 2,628 69 | 880 -17 | 1,748 86 |
| 2023-24 | 20,989 306 | 18,450 395 | 8,109 255 | 10,341 140 | 2,539 -89 | 800 -80 | 1,739 -9 |
| 2024-25 | 21,546 557 | 19,107 657 | 8,270 161 | 10,837 496 | 2,439 -100 | 728 -72 | 1,711 -28 |
| Average | 20,827 | 18,303 | 8,069 | 10,234 | 2,524 | 857 | 1,667 |
The average number of Undergraduate students over the last 11 years is 18,303 where 19,107 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 Illinois State University since 2015.
| Year | Total | Full-time | Part-time | ||||
|---|---|---|---|---|---|---|---|
| Total | Men | Women | Total | Men | Women | ||
| 2015-16 | 18,426 | 17,151 | 7,687 | 9,464 | 1,275 | 624 | 651 |
| 2016-17 | 18,643 | 17,456 | 7,675 | 9,781 | 1,187 | 641 | 546 |
| 2017-18 | 18,330 | 17,165 | 7,585 | 9,580 | 1,165 | 626 | 539 |
| 2018-19 | 18,107 | 16,917 | 7,466 | 9,451 | 1,190 | 610 | 580 |
| 2019-20 | 18,250 | 17,092 | 7,544 | 9,548 | 1,158 | 597 | 561 |
| 2020-21 | 17,987 | 16,666 | 7,087 | 9,579 | 1,321 | 719 | 602 |
| 2021-22 | 17,674 | 16,444 | 6,972 | 9,472 | 1,230 | 623 | 607 |
| 2022-23 | 18,055 | 16,966 | 7,301 | 9,665 | 1,089 | 553 | 536 |
| 2023-24 | 18,450 | 17,416 | 7,599 | 9,817 | 1,034 | 510 | 524 |
| 2024-25 | 19,107 | 18,069 | 7,764 | 10,305 | 1,038 | 506 | 532 |
| Average | 18,303 | 18,303 | 7,468 | 9,666 | 18,303 | 601 | 568 |
The average number of Graduate students over the last 11 years is 2,524 where 2,439 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 Illinois State University since 2015.
| Year | Total | Full-time | Part-time | ||||
|---|---|---|---|---|---|---|---|
| Total | Men | Women | Total | Men | Women | ||
| 2015-16 | 2,334 | 1,139 | 469 | 670 | 1,195 | 359 | 836 |
| 2016-17 | 2,396 | 1,238 | 505 | 733 | 1,158 | 343 | 815 |
| 2017-18 | 2,454 | 1,203 | 462 | 741 | 1,251 | 386 | 865 |
| 2018-19 | 2,528 | 1,290 | 488 | 802 | 1,238 | 378 | 860 |
| 2019-20 | 2,628 | 1,375 | 537 | 838 | 1,253 | 388 | 865 |
| 2020-21 | 2,733 | 1,377 | 563 | 814 | 1,356 | 386 | 970 |
| 2021-22 | 2,559 | 1,289 | 531 | 758 | 1,270 | 366 | 904 |
| 2022-23 | 2,628 | 1,406 | 568 | 838 | 1,222 | 312 | 910 |
| 2023-24 | 2,539 | 1,351 | 512 | 839 | 1,188 | 288 | 900 |
| 2024-25 | 2,439 | 1,235 | 447 | 788 | 1,204 | 281 | 923 |
| Average | 2,524 | 2,524 | 508 | 782 | 2,524 | 349 | 885 |
The percentage of white students is 63.35%. The percentage was 76.58% 10 years ago and Illinois State still has a high percentage of white students. 2.60% of enrolled students is Asian and 12.88% is black students. Hispanic students comprise 13.44% of the student body.
Over the past 10 years, the racial composition has shifted. The percentage of white students decreased from 76.58% to 63.35%. Asian enrollment grew from 2.19% to 2.60%. Black student enrollment increased from 7.40% to 12.88%. Hispanic student representation expanded from 8.89% to 13.44%.
The overall racial diversity, measured by the Census Bureau Diversity Index, is 0.5618 which indicates that moderately diverse. This increased from 0.3990 a decade ago, suggesting that racial diversity has improved.
The following table and chart illustrate the student population trends by race/ethnicity at Illinois State University over the past 11 years (2015-2025).
| Year | American Indian or Native American | Asian | Black | Hispanic | Native Hawaiian or Other Pacific Islander | White | Two or More Races |
|---|---|---|---|---|---|---|---|
| 2015-16 | 22 | 455 | 1,536 | 1,845 | 16 | 15,899 | 530 |
| 2016-17 | 32 | 444 | 1,692 | 2,006 | 16 | 15,828 | 567 |
| 2017-18 | 32 | 433 | 1,706 | 2,030 | 21 | 15,530 | 576 |
| 2018-19 | 22 | 434 | 1,827 | 2,133 | 19 | 14,986 | 629 |
| 2019-20 | 24 | 477 | 1,880 | 2,260 | 21 | 14,865 | 666 |
| 2020-21 | 21 | 507 | 1,968 | 2,300 | 14 | 14,560 | 683 |
| 2021-22 | 17 | 500 | 1,962 | 2,359 | 9 | 14,020 | 700 |
| 2022-23 | 22 | 528 | 2,090 | 2,495 | 10 | 13,905 | 776 |
| 2023-24 | 17 | 565 | 2,308 | 2,713 | 6 | 13,704 | 796 |
| 2024-25 | 16 | 560 | 2,775 | 2,895 | 12 | 13,650 | 840 |
| Average | 23 | 490 | 1,974 | 2,304 | 14 | 14,695 | 676 |
1,302 students are enrolled in online degree programs exclusively for the academic year 2024-2025, which is 6% of total students. The number of online students has increased 308.15% since 2015. The following table and chart illustrate the changes in the online student population by enrolled type at Illinois State University from 2015 to 2025.
| Year | Total Enrollment | Online Completely | Enrolled in Some Online Courses | Not Enrolled in Online Courses |
|---|---|---|---|---|
| 2015-16 | 20,760 | 319 | 2,978 | 17,463 |
| 2016-17 | 21,039 | 330 | 3,665 | 17,044 |
| 2017-18 | 20,784 | 432 | 3,361 | 16,991 |
| 2018-19 | 20,635 | 507 | 3,895 | 16,233 |
| 2019-20 | 20,878 | 600 | 5,106 | 15,172 |
| 2020-21 | 20,720 | 14,568 | 5,246 | 906 |
| 2021-22 | 20,233 | 945 | 7,464 | 11,824 |
| 2022-23 | 20,683 | 986 | 7,452 | 12,245 |
| 2023-24 | 20,989 | 1,155 | 7,135 | 12,699 |
| 2024-25 | 21,546 | 1,302 | 7,853 | 12,391 |
| Average | 20,827 | 2,114 | 5,416 | 13,297 |
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