33051 ZIP Code — Key Colony Beach, FL

Monroe County, Florida

ZIP code 33051 is located in Key Colony Beach, Florida, within Monroe County. It covers approximately 0.44 square miles and serves a population of 650 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 305/786.

About ZIP code 33051

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $828,800. Owner-occupancy sits near the national average at 73%.

Median household income is $103,096. The poverty rate of 6% is below the national average. 60% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with professional and management as the leading industry. The average commute of 11 minutes is near the national average.

Educational attainment is high — 48% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.

Overall, ZIP code 33051 reflects a community defined by a strong veteran community and a significant Social Security-dependent population.

650

population

0.44

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

33051 ZIP code map

Cities in ZIP code 33051

Below are the cities the US Postal Service accepts for ZIP code 33051. Using any city not on this list may result in mail delivery delays.

City	Status
Key Colony Beach	Acceptable

Demographics updated 05/2026

Population
Total population	650
Population density	1,477 / sq mi
State FIPS	12
County FIPS	087

Geography
Land area	0.44 sq mi
Water area	0.21 sq mi
Latitude	24.7226
Longitude	-81.0216
Timezone	Eastern (ET)
Area code	305/786

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	15.9%	34.6%	43.4%
$50k – $100k	39.9%	30.1%	30.8%
$100k – $200k	30.2%	25.6%	19.3%
Over $200k	14.0%	9.7%	6.4%

Demographics & statistics

650

Population

1,477

People per sq mi

66.7

Median age

$103,096

Median household income

$67,750

Per capita income

$828,800

Median home value

$1,797

Median monthly rent

73.0%

Home ownership

5.5%

Poverty rate

0.0%

Unemployment

1,092

Housing units

47.7%

Bachelor's or higher

Age distribution

Male Female

10–14

15–19

25–34

35–44

45–54

55–59

60–64

65–74

100

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	15	2.3%
18 and over	635	97.7%
65 and over	364	56.0%
Median age	66.7 years

Race & ethnicity

White 87.1%

Hispanic or Latino 6.5%

Two or more races 6.5%

Group	Count	%
White	605	87.1%
Hispanic or Latino	45	6.5%
Two or more races	45	6.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	15.9%	34.6%	43.4%
$50k – $100k	39.9%	30.1%	30.8%
$100k – $200k	30.2%	25.6%	19.3%
Over $200k	14.0%	9.7%	6.4%

Under $10k 2.5%

$10k–$15k 4.6%

$15k–$25k 2.2%

$25k–$35k 5.2%

$35k–$50k 7.4%

$50k–$75k 13.6%

$75k–$100k 10.4%

$100k–$150k 32.2%

$150k–$200k 9.8%

$200k+ 12.3%

Range	% of households
Under $10k	2.5%
$10k–$15k	4.6%
$15k–$25k	2.2%
$25k–$35k	5.2%
$35k–$50k	7.4%
$50k–$75k	13.6%
$75k–$100k	10.4%
$100k–$150k	32.2%
$150k–$200k	9.8%
$200k+	12.3%
Median income	$103,096

Housing

Home values

$100k–$150k 3.4%

$150k–$200k 3.4%

$200k–$300k 3.0%

$300k–$500k 10.1%

$500k–$1M 53.7%

$1M+ 26.5%

Housing overview

Metric	Value
Median home value	$828,800
Median rent / month	$1,797
Owner occupied	73.0%
Renter occupied	27.0%
Vacant	69.2%
Single-family detached	30.1%
Large apartment buildings	14.8%
Mobile homes	0.0%
Median rooms	3.3
Avg household size (owned)	1.71

Year built

Era	%
2020 or later	0.0%
2010–2019	2.9%
2000–2009	4.7%
1990–1999	21.5%
1980–1989	19.6%
1970–1979	25.6%
1960–1969	16.5%
1950–1959	8.4%
1940–1949	0.0%
1939 or earlier	0.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	10.0%
2 bedrooms	49.4%
3 bedrooms	34.5%
4 bedrooms	3.8%
5+ bedrooms	0.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	51.0%
2 vehicles	37.6%
3 or more	11.4%

Heating fuel

Fuel type	%
Electricity	98.1%
No fuel used	1.9%

Households & families

Household type	Count	%
Married-couple family	207	56.4%
Cohabiting couple	25	6.8%
Male householder, no spouse	60	16.3%
Female householder, no spouse	75	20.4%
Households with children under 18	7	1.9%
Households with seniors (65+)	270	73.6%
Average household size	1.77

Marital status

Status	Male	Female
Never married	20.0%	5.1%
Married	71.7%	61.3%
Separated	0.0%	0.0%
Widowed	0.0%	25.1%
Divorced	8.3%	8.5%

Education

Less than 9th grade 0.0%

Some HS, no diploma 3.8%

HS graduate 19.8%

Some college, no degree 16.4%

Associate's degree 12.3%

Bachelor's degree 33.9%

Graduate / professional 13.9%

Metric	%
HS diploma or higher	96.2%
Bachelor's or higher	47.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	9	60.0%
High school	6	40.0%
College / grad school	0	0.0%

Employment

Industry of employment

Finance & real estate 19.5%

Professional & management 16.2%

Arts, food & hospitality 16.2%

Retail trade 12.4%

Public administration 9.8%

Education & healthcare 9.0%

Information 7.1%

Transportation & utilities 3.8%

Wholesale trade 3.4%

Construction 2.6%

Occupation

Category	%
Management, business & arts	32.3%
Service	24.4%
Sales & office	40.6%
Natural resources & construction	2.6%
Production & transportation	0.0%

Employment type

Type	%
Private sector	72.9%
Government	12.8%
Self-employed	14.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	58.3%
Carpool	0.0%
Public transit	0.0%
Walk	13.2%
Work from home	15.4%
Other means	13.2%
Avg commute (minutes)	11.2

Poverty

All people 5.5%

Under 18 years 0.0%

18 and over 5.7%

Married-couple families 4.3%

Female-led households 0.0%

Income support

Source	% of households
Social Security	60.2%
Retirement income	41.7%
Supplemental Security	2.2%
Cash public assistance	0.0%
Food stamps / SNAP	2.2%

Health indicators

Condition	%
Obesity	27.5%
High blood pressure	40.6%
High cholesterol	40.6%
Diabetes	12.7%
Heart disease	10.1%
Stroke	4.1%
Asthma	7.7%
Arthritis	32.1%
Kidney disease	3.9%
Pulmonary disease	9.5%
Cancer	11.2%

Behavior / access	%
Smoking	13.9%
Binge drinking	13.5%
No physical activity	22.4%
Less than 7 hrs sleep	30.2%
Depression	16.8%
Fair or poor health	14.5%
Poor mental health	11.5%
Poor physical health	11.6%
No health insurance	13.3%
Visited doctor (checkup)	78.9%
Visited dentist	70.9%
Cholesterol screening	95.8%
Teeth loss	10.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	80	12.6%

Disability	%
Any disability	9.5%
Under 18	0.0%
18–64 years	0.0%
65 and over	17.0%

Health insurance coverage

Type	%
Private insurance	78.5%
Public insurance	52.5%
No insurance	6.6%
Uninsured under 19	40.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	650	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	604	92.9%
Born in same state	604	92.9%
Born in different state	114	17.5%
Foreign born	0	0.0%
Naturalized citizen	46	7.1%
Not a US citizen	29	63.0%

Ancestry

Ancestry	Count	%
French	126	19.4%
Italian	115	17.7%

Ancestry	Count	%
English	11	1.7%
German	7	1.1%

Technology access

Metric	% of households
Computer access	56.5%
Internet access	100.0%

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

Frequently asked questions about ZIP code 33051

What city is ZIP code 33051 in?

ZIP code 33051 is primarily assigned to Key Colony Beach, Florida.

What county is ZIP code 33051 in?

ZIP code 33051 falls within Monroe County, Florida.

Does ZIP code 33051 have an older population?

56% of residents in ZIP code 33051 are 65 or older, above the national average of ~17%.

Does ZIP code 33051 have a large retiree population?

60% of households in ZIP code 33051 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 33051?

48% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 33051 have a large veteran population?

13% of civilians in ZIP code 33051 are veterans, above the national average of ~7%.

What timezone is ZIP code 33051 in?

ZIP code 33051 observes the EST timezone.