Collinsville, IL vs Mount Prospect, IL

The cost of living difference between Collinsville, IL and Mount Prospect, IL is dramatic. Collinsville is 31.6% cheaper than Mount Prospect, a gap that translates to thousands of dollars per year in household expenses. Collinsville has a cost index of 76 while Mount Prospect sits at 111, 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 Collinsville is $979/month compared to $1,454/month in Mount Prospect — a 33% difference. Home values follow the same pattern: Collinsville is more affordable at $157,700 median vs $377,000.

Median household income in Collinsville is $65,170 compared to $103,911 in Mount Prospect (-37.3%). While Mount Prospect is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Collinsville spend roughly 18% of their income on rent, more than the 16.8% in Mount Prospect.