Centralia, IL vs O'Fallon, IL

The cost of living difference between Centralia, IL and O'Fallon, IL is dramatic. Centralia is 33.6% cheaper than O'Fallon, a gap that translates to thousands of dollars per year in household expenses. Centralia has a cost index of 63 while O'Fallon sits at 96, 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 Centralia is $775/month compared to $1,312/month in O'Fallon — a 41% difference. Home values follow the same pattern: Centralia is more affordable at $81,600 median vs $274,100.

Median household income in Centralia is $47,308 compared to $102,793 in O'Fallon (-54%). While O'Fallon is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Centralia spend roughly 19.7% of their income on rent, more than the 15.3% in O'Fallon.