Mount Prospect, IL vs Rockford, IL

The cost of living difference between Mount Prospect, IL and Rockford, IL is dramatic. Rockford is 57.5% cheaper than Mount Prospect, a gap that translates to thousands of dollars per year in household expenses. Mount Prospect has a cost index of 111 while Rockford sits at 70, 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 Mount Prospect is $1,454/month compared to $954/month in Rockford — a 52% difference. Home values follow the same pattern: Rockford is more affordable at $120,900 median vs $377,000.

Median household income in Mount Prospect is $103,911 compared to $53,328 in Rockford (+94.9%). 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 Mount Prospect spend roughly 16.8% of their income on rent, less than the 21.5% in Rockford.

Climate-wise, both cities share similar average temperatures (50.8°F vs 49.4°F). Rockford receives more rainfall at 37.2" per year compared to 32.3" in Mount Prospect.