StatisticKey BiscayneFloridaNational
Population density (sq mi)10,37141091
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 findings

  • The population density in Key Biscayne is 2429% 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
  • In Key Biscayne 1.83% of the population is Asian

Compare Key Biscayne, FL Demographics


      Key Biscayne population breakdown by race

      RaceKey BiscayneFloridaNational
      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.

      Household income distribution

      Place of birth by citizenship

      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).