Arab, AL vs Mountain Brook, AL
The cost of living difference between Arab, AL and Mountain Brook, AL is dramatic. Arab is 53.4% cheaper than Mountain Brook, a gap that translates to thousands of dollars per year in household expenses. Arab has a cost index of 69 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 Arab is $697/month compared to $1,444/month in Mountain Brook — a 52% difference. Home values follow the same pattern: Arab is more affordable at $196,700 median vs $891,300.
Median household income in Arab is $60,985 compared to $191,128 in Mountain Brook (-68.1%). 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 Arab spend roughly 13.7% of their income on rent, more than the 9.1% in Mountain Brook.
Climate-wise, Mountain Brook is notably warmer with an average of 63.9°F compared to 59.9°F in Arab. Arab receives more rainfall at 58.7" per year compared to 56.6" in Mountain Brook.
Income & Cost
Housing
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Rent by Bedroom Size
HUD Fair Market Rent (FY 2026) — metro area average
Everyday Prices
BLS Average Prices by metro area
Climate
NOAA 30-year normals (1991-2020)