Decatur, IL vs South Elgin, IL

The cost of living difference between Decatur, IL and South Elgin, IL is dramatic. Decatur is 42.8% cheaper than South Elgin, a gap that translates to thousands of dollars per year in household expenses. Decatur has a cost index of 62 while South Elgin sits at 109, 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 Decatur is $796/month compared to $1,619/month in South Elgin — a 51% difference. Home values follow the same pattern: Decatur is more affordable at $97,300 median vs $296,100.

Median household income in Decatur is $50,809 compared to $123,744 in South Elgin (-58.9%). While South Elgin is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Decatur spend roughly 18.8% of their income on rent, more than the 15.7% in South Elgin.