Key Biscayne, Florida Population 2024

14,303

Key Biscayne is a city located in Miami-Dade County Florida. Key Biscayne has a 2024 population of 14,303. Key Biscayne is currently declining at a rate of -0.77% annually and its population has decreased by -3% since the most recent census, which recorded a population of 14,745 in 2020.

The average household income in Key Biscayne is $264,913 with a poverty rate of 8.37%. The median age in Key Biscayne is 42.3 years: 37.1 years for males, and 45.5 years for females.

Key Biscayne Demographics

According to the most recent ACS, the racial composition of Key Biscayne was:

  • White: 54.66%
  • Two or more races: 41.85%
  • Other race: 2.53%
  • Black or African American: 0.62%
  • Asian: 0.24%
  • Native Hawaiian or Pacific Islander: 0.1%
  • Native American: 0%
State
Florida
Land Area (mi²)
1.2 sq mi
Density (mi²)
11,467.70/sq mi
Growth Since 2020
-3% (-442)
The current population of Key Biscayne, Florida is 14,303 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 14,745.

Population by Race

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Race
Population
Percentage (of total)
White7,96554.66%
Two or more races6,09941.85%
Other race3682.53%
Black or African American910.62%
Asian350.24%
Native Hawaiian or Pacific Islander140.1%
Native American00%

White

Two or more races

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Native American

Key Biscayne Population by Race

Key Biscayne Population Pyramid 2024

Key Biscayne Median Age

42.3

Total

37.1

Male

45.5

Female

Key Biscayne Adults

There are 9,990 adults, (2,254 of whom are seniors) in Key Biscayne.

Key Biscayne Age Dependency

88.4

Age Dependency Ratio

29.1

Old Age Dependency Ratio

59.2

Child Dependency Ratio

Key Biscayne Sex Ratio

Female7,36950.57%
Male7,20349.43%

Key Biscayne Population by Age

Key Biscayne Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All4,6583.1364.935.1
Married3,0843.8266.733.3
Non Family9851.1470.929.1
Female5262.7842.657.4
Male633.057327

3.53

Average Family Size

3.13

Average Household Size

64.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Key Biscayne Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade600.66%
Associates Degree4484.95%
Bachelors Degree3,27236.15%
Graduate Degree3,37637.3%
High School Graduate7748.55%
Less Than 9th Grade2182.41%
Some College9049.99%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Key Biscayne Educational Attainment by Sex (over 25)

Key Biscayne Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
Hispanic6,5046,2604,714
2+ Races3,5623,3562,687
White2,2992,2651,786
Other Race244217117
Black484815
Asian29296
Islander141414

The highest rate of high school graduation is among black people with a rate of 100%.

The highest rate of bachelors degrees is among islander people with a rate of 100%.

Key Biscayne Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$83,281$160,833$52,733
Graduate Degree$129,522$213,235$73,906
High School Graduate$0$64,808$0
Less Than 9th Grade$65,471$65,673$65,446
Overall$78,946$154,500$52,500
Some College$45,375$92,583$25,573

$78,946

Average Earnings

$154,500

Average Male

$52,500

Average Female

Key Biscayne Earnings by Educational Attainment

Key Biscayne Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Key Biscayne Language

17.02% of Key Biscayne residents speak only English, while 82.98% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 74.07% of the population.

Key Biscayne Language

Key Biscayne Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
Hispanic10,9329088.31%
Multiple6,0995509.02%
White3,1782357.39%
Other368349.24%

8.37%

Overall Poverty Rate

6.72%

Male Poverty Rate

9.99%

Female Poverty Rate

Poverty in Key Biscayne

The race most likely to be in poverty in Key Biscayne is Other, with 9.24% below the poverty level.

The race least likely to be in poverty in Key Biscayne is White, with 7.39% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.46%. Among those working part-time, it was 12.6%, and for those that did not work, the poverty rate was 13.27%.

Key Biscayne Poverty

rate

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Rate
Poverty
High School31.91%
Less Than 9th Grade14.03%
Some College10.8%
Bachelors or Greater5.54%

Key Biscayne Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed25%
Female Unemployed20.98%
Female Employed6.1%
Male Employed2.82%

Key Biscayne Poverty Rate by Employment Status and Sex

Key Biscayne Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$219,112$297,011
Households$173,015$264,913
Married Families$250,001$-999,999,999
Non Families$66,862$130,820

mean

median

Income by Household Type

Key Biscayne Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

58.1%

Overall Marriage Rate

64.2%

Male Marriage Rate

52.9%

Female Marriage Rate

Key Biscayne Married by Age and Sex

male

female

Key Biscayne Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Key Biscayne Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Key Biscayne Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

146

Number of Veterans

146

Male Veterans

0

Female Veterans

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War
Veterans
Vietnam69
Korea20
First Gulf War18
World War II9
Second Gulf War2

Key Biscayne Veterans by War

count

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Age Group
Veterans
75+71
65 to 7455
35 to 5420
18 to 340
55 to 640

Key Biscayne Veterans by Age

count

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Name
Veterans
% of Total
White1242.19%
Hispanic550.75%
2+ Races220.56%

Key Biscayne Veterans by Race

Key Biscayne Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

32.88%

Veteran Disability Rate

Key Biscayne Veterans by Education

LaborForceParticipation

57.4%

Labor Force Participation

55%

Employment Rate

4.1%

Unemployment Rate

Key Biscayne Employment by Age

LaborForceParticipation

Key Biscayne Employment by Race

LaborForceParticipation

Key Biscayne Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

24.39%

Born in Key Biscayne

42.81%

Native Born

57.19%

Foreign Born

32.15%

Non Citizen

25.04%

Naturalized

Place of Birth

42.81% of Key Biscayne residents were born in the United States, with 24.39% having been born in Florida. 32.15% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Key Biscayne Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202913,751-111-0.8%
202813,862-110-0.79%
202713,972-110-0.78%
202614,082-111-0.78%
202514,193-110-0.77%
202414,303-111-0.77%
202314,414-17-0.12%
202214,431-93-0.64%
202114,524-221-1.5%
202014,7451,92615.02%
201912,819-85-0.66%
201812,904-72-0.55%
201712,976650.5%
201612,911860.67%
201512,825430.34%
201412,78270.05%
201312,775960.76%
201212,6791331.06%
201112,5461571.27%
201012,38900%
200010,507-3,244-23.59%

Key Biscayne Population by Year