Cost of Living in Key Biscayne, FL

With a cost of living index of 247, Key Biscayne, FL is one of the most expensive cities in the United States. Living here is 147% more expensive than the national average and 137% above the Florida state average of 110. Key Biscayne is a smaller community of 14,560 residents, where everyday costs can differ substantially from nearby larger cities.

Housing costs are the biggest factor in Key Biscayne's cost of living. The median monthly rent is $3,501 (165% above the US median of $1,319), and the median home value sits at $1,238,700 (306% above the national median of $304,900). At current prices, the median home costs roughly 7.2x the median household income — a challenging ratio that puts homeownership out of reach for many residents.

The median household income in Key Biscayne is $172,604, which is 130% higher than the national median of $75,149. Residents spend roughly 24% of household income on rent. This is a comfortable ratio, well below the 30% threshold that financial experts recommend as a maximum. While incomes are above average, they do not fully offset the higher cost of living.

Climate is another factor for anyone considering a move to Key Biscayne. The area sees an average annual temperature of 77.4°F, with summers averaging 83°F and winters around 71°F. Annual rainfall totals 51 inches spread over roughly 117 days.

Everyday prices in the Miami-Fort Lauderdale-West Palm Beach, FL (Metropolitan Statistical Area) metro area tend to run above the national average. Out of 6 common grocery and utility items tracked by the Bureau of Labor Statistics, 5 are priced higher than the US average. These real-world prices — from groceries to electricity — add up and should be factored into any cost of living comparison.

Data sources: US Census Bureau (ACS 2023), Zillow Home Values, HUD Fair Market Rents, BEA Regional Price Parities, BLS Average Prices, and NOAA Climate Normals. Updated monthly.