How has Illinois State University changed over time?
Multi-year trends in admissions, enrollment, test scores, and cost. Every chart is labeled with its data source and the years it covers — no smoothing, no mixing sources.
Admission rate
Admission rate rose from 67% (2010) to 88% (2024).
Applicants and students admitted
Applicants rose from 13,671 (2010) to 21,573 (2024).
Enrollment
Total enrollment rose from 21,134 (2010) to 21,546 (2024).
SAT mid-50% range
SAT mid-50% range moved from 1010–1190 (2018) to 990–1210 (2024).
- Score data describes enrolled freshmen, not all admitted students.
ACT mid-50% range
ACT mid-50% range moved from 22–26 (2008) to 21–27 (2022).
Cost
In-state tuition rose from $11,832 (2011) to $16,152 (2025).
See how similar schools have changed
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Data from IPEDS and the College Scorecard (U.S. Department of Education) and school Common Data Set filings; each chart names the source its series comes from. Most recent data year: 2025. Last updated October 19, 2026.