Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/FL/KEY-COLONY-BEACH

Key Colony Beach ZIP code, Florida

The ZIP code for Key Colony Beach, FL is 33051.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
511
State
Florida

Mail addressed to Key Colony Beach uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Key Colony Beach in numbers

About 511 people live in Key Colony Beach, in 282 households. The median household income is $94,231 a year, 26% above the Florida median of $74,568 (US: $80,734). The median owner-occupied home is valued at $919,800 (2.6 times the Florida median), and median gross rent is $1,929 a month. The median age is 66.5; 43.8% of adults 25 and over hold a bachelor's degree or higher (34.1% across Florida); the average commute takes 10 minutes.

Population511Key Colony Beach511
Households282Key Colony Beach282
Median age66.5Key Colony Beach66.5Florida42.6US 38.9
Median household income$94,231Key Colony Beach$94,231Florida$74,568US $80,734
Median home value$919,800Key Colony Beach$919,800Florida$359,000US $332,700
Median gross rent$1,929Key Colony Beach$1,929Florida$1,669US $1,413
Bachelor's degree or higher43.8%Key Colony Beach43.8%Florida34.1%US 35.7%
Mean commute10.0 minKey Colony Beach10.0 minFlorida28.0 minUS 26.4 min
Population density1,161 / sq miKey Colony Beach1,161 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Key Colony Beach city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Key Colony Beach

ZIP codes with the USPS city name Key Colony Beach
ZIP City Type Population Median income Median home
33051 Key Colony Beach , FL Standard 511 $94,231 $919,800

Other ZIP codes overlapping Key Colony Beach

These ZIP codes cover part of Key Colony Beach but are addressed as somewhere else.

ZIP codes overlapping Key Colony Beach
ZIP City Type Population Median income Median home
33050 Marathon , FL Standard 10,561 $94,898 $747,300

Map of Key Colony Beach ZIP codes

33051

The ZIP codes of Key Colony Beach, FL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Key Colony Beach

The nearest larger towns are Marathon (9,914 people, 0.7 mi), Duck Key (647 people, 7.8 mi) and Big Pine Key (4,258 people, 22 mi).

Towns near Key Colony Beach
TownPopulationDistance
Marathon 9,914 0.7 mi
Big Pine Key 4,258 21.6 mi

More nearby: every ZIP code in Monroe County · Florida ZIP codes

Cite this page

zipcodes.pro. “Key Colony Beach, FL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/fl/key-colony-beach

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