Arlington Heights, IL vs O'Fallon, IL

There is a significant gap in the cost of living between these two cities. O'Fallon is 27% cheaper than Arlington Heights. With a cost index of 96 vs 121, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from O'Fallon to Arlington Heights should plan for substantially higher expenses across most categories.

On the housing front, median rent in Arlington Heights is $1,727/month compared to $1,312/month in O'Fallon — a 32% difference. Home values follow the same pattern: O'Fallon is more affordable at $274,100 median vs $403,200.

Median household income in Arlington Heights is $118,532 compared to $102,793 in O'Fallon (+15.3%). The higher salaries in Arlington Heights partially offset the cost difference, but don't fully close the gap. Looking at affordability, residents of Arlington Heights spend roughly 17.5% of their income on rent, more than the 15.3% in O'Fallon.