O'Fallon, IL vs Pontiac, IL

The cost of living difference between O'Fallon, IL and Pontiac, IL is dramatic. Pontiac is 41.6% cheaper than O'Fallon, a gap that translates to thousands of dollars per year in household expenses. O'Fallon has a cost index of 96 while Pontiac sits at 67, 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 O'Fallon is $1,312/month compared to $818/month in Pontiac — a 60% difference. Home values follow the same pattern: Pontiac is more affordable at $110,200 median vs $274,100.

Median household income in O'Fallon is $102,793 compared to $59,579 in Pontiac (+72.5%). 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 O'Fallon spend roughly 15.3% of their income on rent, less than the 16.5% in Pontiac.

Climate-wise, O'Fallon is notably warmer with an average of 57.7°F compared to 52.3°F in Pontiac. O'Fallon receives more rainfall at 43.4" per year compared to 40.4" in Pontiac.