Key Biscayne, Florida Demographics & Population 2026
During the 2020–2024 ACS period, Key Biscayne, Florida had a total population of 14,791, the 267th largest village in Florida, with a median household income of $181,505, which is 143% higher than the state average. The poverty rate is 5.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 143% above the state average — one of the wealthiest communities in Florida.
- 77.2% of adults hold a bachelor's degree or higher — top 10% in Florida.
- Housing affordability is a challenge — homes cost 8.7x the median household income.
Key Biscayne Quick Facts
How Key Biscayne Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 14,560 | 14,791 | +1.6% |
| Median household income | $172,604 | $181,505 | +5.2% |
| Median home value | $1,238,700 | $1,575,300 | +27.2% |
How Key Biscayne Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 65 | National average: 61
Education
Educational Attainment (Adults 25+)
Key Biscayne Rankings in Florida
Explore Florida Rankings
Other Cities in Miami-Dade County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Miami | 459,745 | $62,462 | 19.4% | $518,100 |
| Hialeah | 226,165 | $55,594 | 17.0% | $392,000 |
| Miami Gardens | 113,177 | $63,627 | 13.6% | $378,500 |
| Homestead | 82,807 | $65,423 | 18.4% | $380,000 |
| Miami Beach | 82,031 | $72,856 | 14.4% | $556,700 |
| Kendall | 79,562 | $87,325 | 11.2% | $567,900 |
| Doral | 79,216 | $94,164 | 10.3% | $562,800 |
| North Miami | 60,344 | $57,188 | 18.9% | $365,000 |
| The Hammocks | 58,838 | $85,628 | 12.1% | $468,100 |
| Fountainebleau | 55,665 | $64,908 | 12.7% | $320,200 |
Cities Similar to Key Biscayne
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Lake Butler | 17,125 | $182,500 | $930,500 | 64.2% | 3.7% |
| Jupiter Farms | 12,945 | $138,191 | $654,200 | 40.6% | 2.8% |
| Pinecrest | 18,462 | $206,417 | $1,406,400 | 72.4% | 4.3% |
| Atlantic Beach | 13,363 | $118,935 | $630,200 | 57.4% | 7.8% |
| Asbury Lake | 14,458 | $100,949 | $329,600 | 34.9% | 2.2% |
Population Overview
Key Biscayne is a small city located in Florida, within Miami-Dade County. The total population is 14,791. It ranks as the 267th most populous out of 955 Census-designated places in Florida.
Age Demographics
The median age in Key Biscayne is 42.2 years. This is about the same as the state median of 42.6 years. With 31.8% of the population under 18, Key Biscayne has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Key Biscayne is $181,505. This is 143% higher than the state median of $74,568. It is also 125% higher than the national median of $80,734. The poverty rate stands at 5.5%. This is 56% lower than the state poverty rate of 12.6%. The unemployment rate is 2.9%. This is 41% lower than the state rate of 4.8%. The median home value is $1,575,300. Housing costs are 339% higher than the state median of $359,000. The home-value-to-income ratio of 8.7x suggests that housing affordability is a significant concern for many residents. 66.5% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 67.6%.
Race & Ethnicity
The largest racial or ethnic group in Key Biscayne is Hispanic or Latino, making up 70.3% of the population. White (non-Hispanic) residents account for 23.5%. The White (non-Hispanic) population (23.5%) is well below the state average of 50.4%. The Black or African American population (0.3%) is well below the state average of 14.6%. The Hispanic or Latino population is significantly higher than the state average (70.3% vs 27.4%). The Asian population (0.1%) is well below the state average of 2.9%.
Education
77.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Key Biscayne in the top 10% of all cities in the state for educational attainment. This is 126% higher than the state rate of 34.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.1%. Notably, 42.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Key Biscayne, Florida is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Florida state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 955 Census-designated places in Florida. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Key Biscayne, Florida?
Key Biscayne, Florida has a population of 14,791 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Key Biscayne, FL?
The median household income in Key Biscayne is $181,505, which is 125% higher than the national median of $80,734.
What is the poverty rate in Key Biscayne, FL?
The poverty rate in Key Biscayne is 5.5%. This means approximately 809 residents live below the federal poverty line.
What is the racial makeup of Key Biscayne, Florida?
Key Biscayne's population is 23.5% White, 0.3% Black, 70.3% Hispanic/Latino, and 0.1% Asian.
What is the median home value in Key Biscayne, FL?
The median home value in Key Biscayne is $1,575,300. The home-value-to-income ratio is 8.7x.
How educated is Key Biscayne, Florida?
77.2% of adults (25+) in Key Biscayne hold a bachelor's degree or higher, and 42.2% hold a graduate or professional degree.