Key Biscayne ZIP Codes — Miami-Dade County, FL

There is one unique ZIP code in Key Biscayne, Florida and it is 33149. Area code: 305.

ZIP codes

4.71

sq mi land

9.38

sq mi water

305

area code

Key Biscayne, FL ZIP code map

About Key Biscayne, FL

Key Biscayne, Florida, is a charming village located just south of Miami Beach, surrounded by the sparkling waters of the Atlantic Ocean. Known for its beautiful beaches and abundant recreational opportunities, this upscale community offers a serene escape from the bustling urban environment of Miami. With a unique blend of natural beauty and luxury living, Key Biscayne is a desirable destination for both residents and tourists alike.

Location & geography

Geographically, Key Biscayne is situated about six miles south of downtown Miami and only a few miles from Miami Beach. The village spans a land area of 9.42 square miles, complemented by an impressive water area of 18.76 square miles, creating a scenic coastal landscape. Lush parks like Bill Baggs Cape Florida State Park and stunning ocean views enhance the area’s natural allure.

Community & economy

The character of Key Biscayne is defined by its tight-knit community and upscale lifestyle, attracting professionals, families, and retirees. The local economy is driven primarily by tourism, real estate, and small businesses that cater to both residents and visitors. Daily life in Key Biscayne revolves around outdoor activities such as surfing, biking, and enjoying the tranquil beaches that line the coast.

Transportation

Key Biscayne is primarily accessible via the Rickenbacker Causeway, which connects the village to Miami and the mainland. The nearest major airport is Miami International Airport, located approximately 10 miles away, offering extensive domestic and international flight options. Public transportation options are limited, but the nearby Miami-Dade Transit system provides bus services to various locations in the region.

History

Key Biscayne was settled in the late 1800s and became known for its agricultural industry, particularly the cultivation of coconuts and pineapples. The village was officially incorporated in 1991, but its history is punctuated by notable events such as the construction of the Cape Florida Lighthouse in 1825, which remains a key landmark today. Over the years, Key Biscayne has evolved into a sought-after residential and tourist locale.

Did you know?

One surprising fact about Key Biscayne is that it is home to the Cape Florida Lighthouse, the oldest standing structure in Miami-Dade County. Additionally, the village was once a significant site of coconut plantation farming, contributing to the area's early economy.

ZIP codes for Key Biscayne, FL (1)

ZIP code	City	County	Map
33149	Key Biscayne	Miami-Dade	View map

Demographics & statistics

14,639

Population

42.5

Median age

$169,792

Median household income

$87,017

Per capita income

$1,321,200

Median home value

$3,501

Median monthly rent

65.1%

Home ownership

8.3%

Poverty rate

4.1%

Unemployment

5,788

Housing units

73.1%

Bachelor's or higher

Age distribution

Male Female

323

Under 5

330

465

5–9

475

960

10–14

981

688

15–19

704

294

20–24

300

356

25–34

365

769

35–44

787

1,561

45–54

1,597

399

55–59

408

290

60–64

297

592

65–74

605

443

75–84

452

85+

100

← Male

Female →

Age summary

Group	Count	%
Under 18	4,582	31.3%
18 and over	10,057	68.7%
65 and over	2,290	15.6%
Median age	42.5 years

Race & ethnicity

White 38.1%

Hispanic or Latino 30.1%

Two or more races 29.1%

Other race 2%

Black or African American 0.4%

Asian 0.2%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	7,978	38.1%
Hispanic or Latino	6,304	30.1%
Two or more races	6,099	29.1%
Other race	422	2%
Black or African American	91	0.4%
Asian	35	0.2%
Native Hawaiian / Pacific Islander	14	0.1%

Household income

Under $10k 4.6%

$10k–$15k 2.0%

$15k–$25k 2.7%

$25k–$35k 2.2%

$35k–$50k 5.4%

$50k–$75k 10.3%

$75k–$100k 9.3%

$100k–$150k 11.2%

$150k–$200k 5.1%

$200k+ 47.0%

Range	% of households
Under $10k	4.6%
$10k–$15k	2.0%
$15k–$25k	2.7%
$25k–$35k	2.2%
$35k–$50k	5.4%
$50k–$75k	10.3%
$75k–$100k	9.3%
$100k–$150k	11.2%
$150k–$200k	5.1%
$200k+	47.0%
Median income	$169,792

Housing

Home values

Under $50k 1.2%

$200k–$300k 0.7%

$300k–$500k 6.7%

$500k–$1M 27.8%

$1M+ 63.6%

Housing overview

Metric	Value
Median home value	$1,321,200
Median rent / month	$3,501
Owner occupied	65.1%
Renter occupied	34.9%
Vacant	37.0%
Single-family detached	17.9%
Large apartment buildings	75.6%
Mobile homes	0.5%
Median rooms	4.8
Avg household size (owned)	3.18

Year built

Era	%
2020 or later	0.1%
2010–2019	3.7%
2000–2009	10.3%
1990–1999	14.9%
1980–1989	17.3%
1970–1979	32.4%
1960–1969	13.7%
1950–1959	6.9%
1940–1949	0.5%
1939 or earlier	0.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	8.4%
2 bedrooms	42.8%
3 bedrooms	28.1%
4 bedrooms	11.0%
5+ bedrooms	8.9%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	39.8%
2 vehicles	39.2%
3 or more	18.1%

Heating fuel

Fuel type	%
Utility gas	5.4%
Electricity	88.3%
Propane / LP gas	0.7%
Fuel oil	0.5%
No fuel used	5.0%

Households & families

Household type	Count	%
Married-couple family	3,102	66.3%
Cohabiting couple	155	3.3%
Male householder, no spouse	300	6.4%
Female householder, no spouse	1,119	23.9%
Households with children under 18	2,255	48.2%
Households with seniors (65+)	1,522	32.5%
Average household size	3.13

Marital status

Status	Male	Female
Never married	29.4%	28.7%
Married	64.4%	53.1%
Separated	0.2%	0.8%
Widowed	2.0%	5.5%
Divorced	4.0%	11.9%

Education

Less than 9th grade 2.6%

Some HS, no diploma 0.7%

HS graduate 8.7%

Some college, no degree 10.1%

Associate's degree 4.9%

Bachelor's degree 36.1%

Graduate / professional 37.0%

Metric	%
HS diploma or higher	96.8%
Bachelor's or higher	73.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	181	3.6%
Kindergarten	137	2.8%
Elementary school	2,298	46.2%
High school	1,293	26.0%
College / grad school	1,063	21.4%

Employment

Industry of employment

Finance & real estate 27.6%

Professional & management 19.2%

Education & healthcare 14.9%

Arts, food & hospitality 6.6%

Retail trade 6.2%

Other services 5.7%

Wholesale trade 4.7%

Information 4.6%

Manufacturing 3.2%

Transportation & utilities 2.9%

Construction 2.4%

Public administration 1.9%

Occupation

Category	%
Management, business & arts	63.8%
Service	9.4%
Sales & office	22.5%
Natural resources & construction	1.5%
Production & transportation	2.7%

Employment type

Type	%
Private sector	83.9%
Government	5.2%
Self-employed	10.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	59.9%
Carpool	3.6%
Public transit	2.9%
Walk	3.9%
Other means	4.1%
Avg commute (minutes)	24.0

Poverty

All people 8.3%

Under 18 years 8.4%

18 and over 8.3%

Married-couple families 4.3%

Female-led households 22.4%

Income support

Source	% of households
Social Security	26.1%
Retirement income	13.9%
Supplemental Security	2.9%
Cash public assistance	1.7%
Food stamps / SNAP	1.8%

Health indicators

Condition	%
High blood pressure	27.2%
High cholesterol	31.0%
Heart disease	5.1%
Stroke	2.1%
Asthma	6.5%
Arthritis	18.8%
Kidney disease	2.7%
Pulmonary disease	3.7%
Cancer	6.8%

Behavior / access	%
Binge drinking	13.6%
No physical activity	20.4%
Less than 7 hrs sleep	29.3%
Fair or poor health	10.3%
Poor mental health	10.7%
Poor physical health	7.7%
No health insurance	17.4%
Visited doctor (checkup)	77.1%
Visited dentist	75.8%
Cholesterol screening	94.9%
Teeth loss	5.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	146	1.5%

Disability	%
Any disability	5.7%
Under 18	1.5%
18–64 years	3.3%
65 and over	22.5%

Health insurance coverage

Type	%
Private insurance	86.8%
Public insurance	17.7%
Uninsured under 19	1.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	13,986	95.5%
Spanish	2,276	16.3%
Other Indo-European	2,070	14.8%
Asian & Pacific Islander	206	1.5%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,251	42.7%
Born in same state	5,595	38.2%
Born in different state	3,554	24.3%
Foreign born	656	4.5%
Naturalized citizen	8,388	57.3%
Not a US citizen	3,667	43.7%

Ancestry

Ancestry	Count	%
French	509	3.5%
Italian	407	2.8%
Arab	392	2.7%
English	49	0.3%

Ancestry	Count	%
German	17	0.1%
Irish	14	0.1%
Dutch	10	0.1%
Norwegian	8	0.1%

Technology access

Metric	% of households
Computer access	31.9%
Internet access	98.4%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Key Biscayne, FL have?

Key Biscayne, FL has one ZIP code: 33149. Each ZIP code serves a distinct delivery area within the city and surrounding region.