Key Biscayne, FL vs North Miami Beach, FL

The cost of living difference between Key Biscayne, FL and North Miami Beach, FL is dramatic. North Miami Beach is 115.5% cheaper than Key Biscayne, a gap that translates to thousands of dollars per year in household expenses. Key Biscayne has a cost index of 247 while North Miami Beach sits at 115, 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 Key Biscayne is $3,501/month compared to $1,626/month in North Miami Beach — a 115% difference. Home values follow the same pattern: North Miami Beach is more affordable at $317,800 median vs $1,238,700.

Median household income in Key Biscayne is $172,604 compared to $57,633 in North Miami Beach (+199.5%). While Key Biscayne is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Key Biscayne spend roughly 24.3% of their income on rent, less than the 33.9% in North Miami Beach. The Key Biscayne ratio exceeds the commonly recommended 30% threshold, which can put pressure on household budgets.

Climate-wise, both cities share similar average temperatures (77.4°F vs 77.3°F). North Miami Beach receives more rainfall at 62" per year compared to 51" in Key Biscayne.