Blue Island, IL vs Oak Brook, IL

The cost of living difference between Blue Island, IL and Oak Brook, IL is dramatic. Blue Island is 57.9% cheaper than Oak Brook, a gap that translates to thousands of dollars per year in household expenses. Blue Island has a cost index of 82 while Oak Brook sits at 196, making this one of the more striking comparisons on our site. Relocating between these cities would require a serious reassessment of budget and lifestyle expectations.

On the housing front, median rent in Blue Island is $1,071/month compared to $2,921/month in Oak Brook — a 63% difference. Home values follow the same pattern: Blue Island is more affordable at $169,800 median vs $867,900.

Median household income in Blue Island is $60,965 compared to $171,123 in Oak Brook (-64.4%). While Oak Brook is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Blue Island spend roughly 21.1% of their income on rent, more than the 20.5% in Oak Brook.