Bolingbrook, IL vs Rock Island, IL

The cost of living difference between Bolingbrook, IL and Rock Island, IL is dramatic. Rock Island is 70.6% cheaper than Bolingbrook, a gap that translates to thousands of dollars per year in household expenses. Bolingbrook has a cost index of 112 while Rock Island sits at 66, 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 Bolingbrook is $1,718/month compared to $819/month in Rock Island — a 110% difference. Home values follow the same pattern: Rock Island is more affordable at $118,400 median vs $295,500.

Median household income in Bolingbrook is $107,552 compared to $57,292 in Rock Island (+87.7%). While Bolingbrook is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Bolingbrook spend roughly 19.2% of their income on rent, more than the 17.2% in Rock Island.