Key Biscayne demographics profile

StatisticKey BiscayneFloridaNational
Population density (sq mi)10,37129491
Median age44.041.637.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)68%54%55%
Families w/ Kids under 1847%38%43%
Speak English27%72%79%
Speak Spanish64%21%13%
Key Biscayne, FL has a population of 12,935 and is the 3,222nd largest city in the United States. The population density is 10,371 per sq mi which is 3432% higher than the Florida average and 11347% higher than the national average. The median age in Key Biscayne is 44 which is approximately 6% higher than the Florida average of 42. In Key Biscayne, 68% of the population over 15 years of age are married, 27% speak English and 64% speak Spanish. 26% of Key Biscayne residents were born in Florida, 20% were born out of state, 5% were born outside of the United States and 49% were foreign born.

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Did you know?

  • The population density in Key Biscayne is 3432% higher than Florida.
  • The median age in Key Biscayne is 6% higher than Florida.
  • In Key Biscayne 96.51% of the population is White.
  • In Key Biscayne 0.30% of the population is Black or African American.
  • In Key Biscayne 1.83% of the population is Asian.

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Key Biscayne population breakdown by race

RaceKey BiscayneFloridaNational
Black or African American0.30%16.14%12.63%
American Indian0.19%0.27%0.82%
Native Hawaiian0.00%0.06%0.18%
Mixed race0.85%2.48%3.06%
Other race0.31%2.54%4.75%
In Key Biscayne, 65.8% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Key Biscayne age breakdown

Marital status

Age of children in married couples

Source: The Key Biscayne, FL demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).