Illinois residents paid $6,072 to attend the two-year public institution this year $288 more than the $5,784 charged for 2016-17.
Non-resident students would have paid 47.8 percent more than residents this year, or $8,976. Non-resident tuition and fees grew 5.1 percent from $8,544 in 2016-17.
About 99 percent of the school's undergraduate population are Illinois residents.
Data shows 73 percent of full-time undergraduates who started school in 2015-16 received student financial aid in some form. In all, 487 students received grants or scholarships totaling $2.45 million and 162 students took out student loans totaling more than $1.02 million.
Including all undergraduates, 2,841 students used grants or scholarships totaling $13.81 million. Another 945 took out $7.24 million in federal student loans.
Editor's note: A previous version of this story incorrectly described the cost of attendance, which includes both tuition and fees.