Key Biscayne Population

2000–2026

14,869

2026 projection

0.8% since 2020 (increase)

05K10K15K20K200020052010201520202025

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Key Biscayne. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202614,869+540.36%
202514,815-1491.00%
202414,964-270.18%
202314,991+2261.53%
202214,765+2401.65%
202114,525-2201.49%
202014,745+1,92615.02%
201912,819-850.66%
201812,904-720.55%
201712,976+650.50%

Showing 10 of 18 years.

Key Biscayne Demographics

42.2median age

Median age

Female45.4 yrs
Male37.4 yrs

Adults

10,089
2,317 seniors · 23%7,772 other adults

Sex

Female 50.1% · 7,406Male 49.9% · 7,385

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 148 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Key Biscayne Income

$181,505median household income

Median household income

$181,505

Half of households earn more, half earn less

Median earnings

$87,265

Typical yearly pay for a worker 25 or older.

Poverty rate

5.5%

About 1 in 18 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Key Biscayne Marital Status

61% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married61%67%56%
Never married26%28%24%
Divorced8%3%12%
Widowed4%2%7%
Separated<1%<1%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201