Is University of Illinois Urbana-Champaign or UC San Diego cheaper for out-of-state undergraduates?

The biggest reason is that UC San Diego combines very high nonresident tuition with a higher cost of living in La Jolla and the San Diego area. UIUC is not cheap for nonresidents, but housing and day-to-day expenses in Champaign-Urbana are typically lower.

Tuition and mandatory fees are a major part of the gap. At UC San Diego, out-of-state students pay the standard UC tuition plus the nonresident supplemental tuition, which pushes the annual academic cost well above what many public universities charge. UIUC also charges substantial out-of-state tuition, and some majors cost more than others, but its overall academic charges are commonly lower than UC San Diego’s for a typical nonresident student.

Living expenses usually reinforce that difference rather than cancel it out. San Diego area housing, food, transportation, and incidental costs are typically more expensive than in central Illinois, whether you live on campus or off campus. Even if the published room-and-board estimates at the two schools do not look dramatically different at first glance, students often find the local market around UC San Diego harder on the budget.

One thing to check carefully is your specific major and aid package. UIUC pricing can vary by program, especially in engineering or business, and either school could become the cheaper option if one offers you stronger merit or need-based support.