Key Biscayne, FL vs Lake Worth Beach, FL

The cost of living difference between Key Biscayne, FL and Lake Worth Beach, FL is dramatic. Lake Worth Beach is 124.8% 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 Lake Worth Beach sits at 110, 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 $1,439/month in Lake Worth Beach — a 143% difference. Home values follow the same pattern: Lake Worth Beach is more affordable at $329,300 median vs $1,238,700.

Median household income in Key Biscayne is $172,604 compared to $60,978 in Lake Worth Beach (+183.1%). 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 28.3% in Lake Worth Beach.

Climate-wise, both cities share similar average temperatures (77.4°F vs 75.8°F). Lake Worth Beach receives more rainfall at 61.7" per year compared to 51" in Key Biscayne.