Key Biscayne, FL Demographics

A map of Key Biscayne's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Hispanic	10,398	9,888	70.3%	66.8%
White	3,475	3,979	23.5%	26.9%
Multiracial	837	719	5.7%	4.9%
Black	42	27	0.3%	0.2%
Asian	21	106	0.1%	0.7%
Native American/Other	18	90	0.1%	0.6%

Key Biscayne, Florida has an estimated population of 14,791, a less than 1% change from the 14,809 recorded in the 2020 Census. The population is 70.3% Hispanic, 23.5% White, 5.7% Multiracial, 0.3% Black, 0.1% Asian, and 0.1% Native American/Other. This demographic dot map shows the population of Key Biscayne, with one dot drawn for each person counted by the Census, color-coded by race.

Key Biscayne has become less racially diverse since the 2020 Census. It is considerably less diverse than Florida overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Key Biscayne, that probability was 47.9% in 2020 and 44.7% in the most recent ACS estimates.

Key Biscayne is ranked the 267th most populous place in Florida, out of 956 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Key Biscayne was ranked the 257th most populous place in the 2020 Census.

Key Biscayne's White Population

3,475 residents of Key Biscayne, or 23.5% of the population, identify as White. The share of White residents in Key Biscayne is significantly lower than in Florida overall, where 50.4% of the population is White. Key Biscayne ranks 820th statewide in terms of White residents as a share of the population, out of 956 places.

Since the 2020 Census, Key Biscayne's White population has declined by an estimated 12.7%. White residents' share of Key Biscayne's population has decreased from 26.9% to 23.5%.

Key Biscayne is more White than neighboring Miami (12.1% White). Key Biscayne is less White than neighboring Fisher Island (86.3% White), Coral Gables (32.3% White), Miami Beach (36% White), and South Miami (24.5% White).

Key Biscayne's Black Population

42 residents of Key Biscayne, or 0.3% of the population, identify as Black. The share of Black residents in Key Biscayne is considerably lower than in Florida overall, where 14.6% of the population is Black. Key Biscayne ranks 911th statewide in terms of Black residents as a share of the population, out of 956 places.

Since the 2020 Census, Key Biscayne's Black population has grown by an estimated 55.6%. Black residents' share of Key Biscayne's population has remained roughly unchanged at 0.3%.

Key Biscayne is more Black than neighboring Fisher Island (0% Black). Key Biscayne is less Black than neighboring Coral Gables (3.7% Black), Miami (11.9% Black), Miami Beach (3.2% Black), and South Miami (11.7% Black).

Key Biscayne's Asian Population

21 residents of Key Biscayne, or 0.1% of the population, identify as Asian. The share of Asian residents in Key Biscayne is slightly lower than in Florida overall, where 2.9% of the population is Asian. Key Biscayne ranks 684th statewide in terms of Asian residents as a share of the population, out of 956 places.

Since the 2020 Census, Key Biscayne's Asian population has declined by an estimated 80.2%. Asian residents' share of Key Biscayne's population has decreased from 0.7% to 0.1%.

Key Biscayne is less Asian than neighboring Fisher Island (1.7% Asian), Coral Gables (3.1% Asian), Miami (1.6% Asian), Miami Beach (2.7% Asian), and South Miami (2.9% Asian).

Key Biscayne's Hispanic Population

10,398 residents of Key Biscayne, or 70.3% of the population, identify as Hispanic. The share of Hispanic residents in Key Biscayne is significantly higher than in Florida overall, where 27.4% of the population is Hispanic. Key Biscayne ranks 49th statewide in terms of Hispanic residents as a share of the population, out of 956 places.

Since the 2020 Census, Key Biscayne's Hispanic population has grown by an estimated 5.2%. Hispanic residents' share of Key Biscayne's population has increased from 66.8% to 70.3%.

Key Biscayne is more Hispanic than neighboring Fisher Island (9.7% Hispanic), Coral Gables (56.6% Hispanic), Miami Beach (52.5% Hispanic), and South Miami (53.8% Hispanic). Key Biscayne is less Hispanic than neighboring Miami (71.5% Hispanic).

Key Biscayne's Native American/Other Population

18 residents of Key Biscayne, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Key Biscayne is comparable to the share in Florida overall, where 0.8% of the population is Native American/Other. Key Biscayne ranks 627th statewide in terms of Native American/Other residents as a share of the population, out of 956 places.

Since the 2020 Census, Key Biscayne's Native American/Other population has declined by an estimated 80.0%. Native American/Other residents' share of Key Biscayne's population has decreased from 0.6% to 0.1%.

Key Biscayne is less Native American/Other than neighboring Fisher Island (2.3% Native American/Other), Coral Gables (0.7% Native American/Other), Miami (0.7% Native American/Other), Miami Beach (1.8% Native American/Other), and South Miami (0.4% Native American/Other).

Key Biscayne's Multiracial Population

837 residents of Key Biscayne, or 5.7% of the population, identify as Multiracial. The share of Multiracial residents in Key Biscayne is comparable to the share in Florida overall, where 3.8% of the population is Multiracial. Key Biscayne ranks 178th statewide in terms of Multiracial residents as a share of the population, out of 956 places.

Since the 2020 Census, Key Biscayne's Multiracial population has grown by an estimated 16.4%. Multiracial residents' share of Key Biscayne's population has increased from 4.9% to 5.7%.

Key Biscayne is more Multiracial than neighboring Fisher Island (0% Multiracial), Coral Gables (3.5% Multiracial), Miami (2.2% Multiracial), and Miami Beach (3.8% Multiracial). Key Biscayne is less Multiracial than neighboring South Miami (6.7% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.