Key Biscayne, Florida.
Typical home $1,725,646 (+7.7% in a year), asking rent $7,716 (+7.7%). Miami-Fort Lauderdale-Pompano Beach, FL metro.
to buy the typical home at today's mortgage rate — +$5,065 (+127%) since Jan 2020.
- 1 year
- Up $123,072 +8%
- $1,602,574$1,725,646 since Sep 2025
- 5 years
- Up $461,775 +37%
- $1,263,871$1,725,646 since Sep 2021
Monthly payment to buy the typical home
Home value × that month's 30-year mortgage rate, 20% down, principal and interest. This is the line households feel: prices and rates compound each other.
- Key Biscayne$9,057
- Florida$1,970
- United States$1,922
At the last five years' pace, a typical home here doubles in price every 11 years.
Typical home values in Key Biscayne, FL rose 7.7% over the past year — faster than the nation's +1.2%.
Asking rents in Key Biscayne, FL rose 7.7% over the past year — faster than the nation's +2.7%.
Owning the typical home in Key Biscayne runs $4,352/mo more than renting one. The gap peaked at $5,146 in May 2024.
That is $12,068 a month against $7,716 rent: a $9,057 mortgage payment, plus $1,163 property tax and $1,847 insurance & upkeep.
Owning vs renting — Key Biscayne
The owning line is the typical home's monthly payment at that month's rate, plus property tax and insurance & upkeep; the renting line is the typical asking rent; the grey line is the mortgage payment on its own. Same homes, same months, both ways of paying for a roof.
- Owning all in$12,068
- Renting$7,716
- Mortgage only$9,057
Property tax · $1,163/mo 0.81% of value a year — the ACS 2020-2024 median bill over the median home value for Miami-Dade County, FL
Insurance & upkeep · $1,847/mo insurance, maintenance and repairs together, from the BLS Consumer Expenditure Survey — the national figure for mortgaged homeowners, scaled to this market's home value. BLS publishes the three bundled and they cannot be split.
Both are priced off the same month's home value, so they rise with the market. Neither is a quote — a specific home's bill depends on its assessment, its age and its insurer.
Living in Key Biscayne, Miami-Dade County, Florida
Key Biscayne is a village of 14,809 people in Miami-Dade County. Half its households earn more than $181,505 a year and half less, against $71,753 across Miami-Dade County; 6% of its people live below the poverty line. 67% of its homes are lived in by their owners and 33% are rented. Unemployment in Miami-Dade County was 1.9% in September 2026, and the county had 1.5% more jobs in 2025 than the year before. The most residents work in finance and property, then professional services.
Written by AI Claude Sonnet 5.5 wrote this on 23 October 2026 from the figures here, a list of nearby places and what it knows. It can be wrong or out of date.
What it’s like
The place. Key Biscayne is a village on an island, home to a population of a size you could cross on foot in an afternoon, and its residents are somewhat older than in most places. Incomes run far above the county's, few people live below the poverty line, and most homes are lived in by their owners, though homes and rents both sit at the expensive end. Winters are mild, with January days that stay warm and nights that stay mild, summers are hot, snow is rare to nonexistent, and the year brings plenty of rain.
Work. Most adults here hold a four-year degree, and residents work mainly in banks, insurance and property, in professional and business services, in schools, hospitals and social care, and in restaurants, hotels and entertainment. Among the biggest workplaces in Key Biscayne are the Ritz-Carlton, a membership hotel, and Winn-Dixie, the supermarket. Commutes are of middling length, and a good many people work from home. Across Miami-Dade County, unemployment has fallen from a year earlier and the number of jobs has grown slightly.
Things to do. Miami Seaquarium, an aquarium, sits in or beside town. A short drive away are Vizcaya Museum and Gardens, a botanical garden, and Biscayne Bay, where people go to be on the water. Biscayne National Park, a longer drive away, offers a day out in a national park.
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- 4,945households
- 77%of adults have a degree
- 6%below the poverty line
- 24 mintypical commute
- 35%work from home
What residents work in
Employed residents by industry, from the Census survey. Miami-Dade County had 1,276,535 jobs in 2025, 1.5% more than the year before (Bureau of Labor Statistics).
Weather through the year
Coldest in January, with highs near 78° and lows near 63°; warmest in August, with highs near 91° and lows near 79°. About 55 inches of rain a year, and little or no snow.
Average daily high and low, 1991–2020, at the Cape Florida weather station, a mile away (NOAA).
Largest employers in Key Biscayne
- Village of Key Biscayne143
- Winn Dixie Stores, Inc.101
- Ritz Carlton Key Biscayne30
From the Village of Key Biscayne’s annual financial report for 2025, its schedule of principal employers (its source: “Village of Key Biscayne Finance Department”), as Florida’s Auditor General publishes it: the report. Employees as the report counts them.
Natural hazards
- HurricanesRelatively high
- Coastal floodingRelatively moderate
FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Key Biscayne’s census tracts, against the rest of the country; all of them together, relatively low. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.
From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Miami-Dade County and the Miami-Fort Lauderdale-Pompano Beach, FL metro.
Key Biscayne home values
Zillow measures a city over its municipal boundary. Against the state and national figures, mid-tier homes, smoothed and seasonally adjusted.
- Key Biscayne$1,725,646
- Florida$375,361
- United States$366,157
Sellers are cutting prices on about 1 in 7 Key Biscayne listings — the market is roughly in balance.
When this market ran hot
Each cell is that month's year-on-year home-value growth. Read left to right, top row is the latest year — the 2021–22 band is the boom.
Market heat, inside the city limits
Share of listings with a price cut
The early-warning dial: sellers cut when buyers stop reaching. Rising cuts cool a market months before prices notice.
- Key Biscayne13.80%
- United States26.90%
Homes for sale
Active for-sale inventory. More supply hands power to buyers.
- Key Biscayne145
New listings per month
Sellers arriving at the market.
- Key Biscayne23
Median sale price
What buyers actually paid — closed sales, not asking prices.
- Key Biscayne$1,458,687
- United States$371,407
Sale-to-list ratio
Above 100%, homes sell over asking; below, buyers negotiate wins.
Not enough data to draw this yet.
Zip codes with a Key Biscayne address
A different geography, not a breakdown. The figure above covers the municipality; these zips cover everywhere the Post Office calls Key Biscayne — often including townships beyond the city limits. Both come straight from Zillow, and they are not expected to average out.