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-WEST

Key West ZIP codes, Florida

Key West, FL has 3 ZIP codes: 33040, 33041 and 33045. The largest is 33040.

USPS city name
3 ZIP codes
Population
25,720
State
Florida

Key West in numbers

About 25,720 people live in Key West, in 10,775 households. The median household income is $87,037 a year, 17% above the Florida median of $74,568 (US: $80,734). The median owner-occupied home is valued at $852,400 (2.4 times the Florida median), and median gross rent is $2,220 a month. The median age is 46.1; 41.3% of adults 25 and over hold a bachelor's degree or higher (34.1% across Florida); the average commute takes 15 minutes.

Population25,720Key West25,720
Households10,775Key West10,775
Median age46.1Key West46.1Florida42.6US 38.9
Median household income$87,037Key West$87,037Florida$74,568US $80,734
Median home value$852,400Key West$852,400Florida$359,000US $332,700
Median gross rent$2,220Key West$2,220Florida$1,669US $1,413
Bachelor's degree or higher41.3%Key West41.3%Florida34.1%US 35.7%
Mean commute14.8 minKey West14.8 minFlorida28.0 minUS 26.4 min
Population density4,594 / sq miKey West4,594 / sq mi

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

ZIP codes addressed as Key West

ZIP codes with the USPS city name Key West
ZIP City Type Population Median income Median home
33040 Key West , FL Standard 35,429 $86,586 $819,400
33041 Key West , FL No street area — — —
33045 Key West , FL No street area — — —

Map of Key West ZIP codes

330403304133045

The ZIP codes of Key West, 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 West

Towns near Key West
TownPopulationDistance
Stock Island 4,162 2.2 mi
Big Coppitt Key 3,109 7.8 mi
Big Pine Key 4,258 27.2 mi

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

Cite this page

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

Underlying data is public domain or openly licensed — sources, vintages and licences.