Key Biscayne

County:: Miami-Dade County
County Seat:: No
Area (mi²):: 1.247
State:: Florida

Key Biscayne is a village located in Miami-Dade County, Florida. Key Biscayne has a 2025 population of 14,193. Key Biscayne is currently declining at a rate of -0.77% annually and its population has decreased by -3.74% since the most recent census, which recorded a population of 14,745 in 2020.

The average household income in Key Biscayne is $273,222 with a poverty rate of 7.73%.The median age in Key Biscayne is 43.1 years: 37.5 years for males, and 46.4 years for females.

Demographics

The racial composition of Key Biscayne includes 45.33% White, and smaller percentages for other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
Two or more races	7,432	51.04%
White	6,600	45.33%
Other race	342	2.35%
Black or African American	140	0.96%
Asian	32	0.22%
Native Hawaiian or Pacific Islander	14	0.1%

Key Biscayne Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Key Biscayne's average per capita income is $87,091. Household income levels show a median of $172,604. The poverty rate stands at 7.73%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$250,001	-
Families	$241,454	$321,865
Households	$172,604	$273,222
Non Families	$53,929	$105,007

$87,091

Average Income

$172,604

Median Household Income

7.73%

Poverty Rate