Decatur, AL vs Mountain Brook, AL

The cost of living difference between Decatur, AL and Mountain Brook, AL is dramatic. Decatur is 51% cheaper than Mountain Brook, a gap that translates to thousands of dollars per year in household expenses. Decatur has a cost index of 73 while Mountain Brook sits at 149, 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 $861/month compared to $1,444/month in Mountain Brook — a 40% difference. Home values follow the same pattern: Decatur is more affordable at $190,500 median vs $891,300.

Median household income in Decatur is $59,831 compared to $191,128 in Mountain Brook (-68.7%). While Mountain Brook 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 17.3% of their income on rent, more than the 9.1% in Mountain Brook.

Climate-wise, both cities share similar average temperatures (61.4°F vs 63.9°F). Mountain Brook receives more rainfall at 56.6" per year compared to 49.5" in Decatur.