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/STOCK-ISLAND

Stock Island ZIP codes, Florida

No ZIP code is named for Stock Island, FL; addresses there use a neighbouring town's name. The ZIP code covering it is 33040.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
4,162
State
Florida

Stock Island in numbers

About 4,162 people live in Stock Island, in 1,624 households. The median household income is $65,515 a year, 12% below the Florida median of $74,568 (US: $80,734). The median owner-occupied home is valued at $517,500 (44% above the Florida median), and median gross rent is $2,013 a month. The median age is 34.5; 24.3% of adults 25 and over hold a bachelor's degree or higher (34.1% across Florida); the average commute takes 13 minutes.

Population4,162Stock Island4,162
Households1,624Stock Island1,624
Median age34.5Stock Island34.5Florida42.6US 38.9
Median household income$65,515Stock Island$65,515Florida$74,568US $80,734
Median home value$517,500Stock Island$517,500Florida$359,000US $332,700
Median gross rent$2,013Stock Island$2,013Florida$1,669US $1,413
Bachelor's degree or higher24.3%Stock Island24.3%Florida34.1%US 35.7%
Mean commute13.1 minStock Island13.1 minFlorida28.0 minUS 26.4 min
Population density4,973 / sq miStock Island4,973 / sq mi

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

ZIP codes covering Stock Island

These ZIP codes cover part of Stock Island but are addressed as somewhere else.

ZIP codes overlapping Stock Island
ZIP City Type Population Median income Median home
33040 Key West , FL Standard 35,429 $86,586 $819,400

Map of Stock Island ZIP codes

33040

The ZIP codes of Stock Island, 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 Stock Island

The nearest larger towns are Key West (25,720 people, 2.2 mi), Big Pine Key (4,258 people, 25 mi) and Marathon (9,914 people, 46 mi).

Towns near Stock Island
TownPopulationDistance
Key West 25,720 2.2 mi
Big Coppitt Key 3,109 5.6 mi
Big Pine Key 4,258 25.1 mi

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

Cite this page

zipcodes.pro. “Stock Island, FL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/fl/stock-island

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