Cost of Living in Duck Key, FL

With a cost of living index of 223, Duck Key, FL is one of the most expensive cities in the United States. Living here is 123% more expensive than the national average and 113% above the Florida state average of 110. Duck Key is a small community of 755 residents.

Housing costs are the biggest factor in Duck Key'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 $989,900 (225% above the national median of $304,900). At current prices, the median home costs roughly 7.3x the median household income — a challenging ratio that puts homeownership out of reach for many residents.

The median household income in Duck Key is $135,000, which is 80% higher than the national median of $75,149. Residents spend roughly 31% of household income on rent. This exceeds the recommended 30% threshold, meaning many renters here are cost-burdened. While incomes are above average, they do not fully offset the higher cost of living.

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.