Naperville, IL vs Rockford, IL

The cost of living difference between Naperville, IL and Rockford, IL is dramatic. Rockford is 90.1% cheaper than Naperville, a gap that translates to thousands of dollars per year in household expenses. Naperville has a cost index of 134 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 Naperville is $1,852/month compared to $954/month in Rockford — a 94% difference. Home values follow the same pattern: Rockford is more affordable at $120,900 median vs $509,900.

Median household income in Naperville is $150,937 compared to $53,328 in Rockford (+183%). While Naperville is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Naperville spend roughly 14.7% of their income on rent, less than the 21.5% in Rockford.

Climate-wise, both cities share similar average temperatures (49.7°F vs 49.4°F). Rockford receives more rainfall at 37.2" per year compared to 33.2" in Naperville.