O'Fallon, MO vs St. Louis, MO

There is a significant gap in the cost of living between these two cities. St. Louis is 29% cheaper than O'Fallon. With a cost index of 78 vs 101, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from St. Louis to O'Fallon should plan for substantially higher expenses across most categories.

On the housing front, median rent in O'Fallon is $1,400/month compared to $978/month in St. Louis — a 43% difference. Home values follow the same pattern: St. Louis is more affordable at $185,100 median vs $305,100.

Median household income in O'Fallon is $107,203 compared to $55,279 in St. Louis (+93.9%). 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 15.7% of their income on rent, less than the 21.2% in St. Louis.