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/NY/COLD-SPRING-HARBOR

Cold Spring Harbor ZIP code, New York

The ZIP code for Cold Spring Harbor, NY is 11724, and its area codes are 516, 631 and 363.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
3,220
Area codes
516, 631, 363

Mail addressed to Cold Spring Harbor 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.

Cold Spring Harbor in numbers

About 3,220 people live in Cold Spring Harbor, in 1,030 households. The median household income is $250,000+ a year (US: $80,734). The median owner-occupied home is valued at $1,587,900 (3.7 times the New York median). The median age is 40.4; 76.7% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 34 minutes.

Population3,220Cold Spring Harbor3,220
Households1,030Cold Spring Harbor1,030
Median age40.4Cold Spring Harbor40.4New York39.8US 38.9
Median household income$250,000+Cold Spring Harbor$250,000+New York$85,974US $80,734
Median home value$1,587,900Cold Spring Harbor$1,587,900New York$423,800US $332,700
Bachelor's degree or higher76.7%Cold Spring Harbor76.7%New York40.2%US 35.7%
Mean commute33.5 minCold Spring Harbor33.5 minNew York32.6 minUS 26.4 min
Population density944 / sq miCold Spring Harbor944 / sq mi

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

ZIP codes addressed as Cold Spring Harbor

ZIP codes with the USPS city name Cold Spring Harbor
ZIP City Type Population Median income Median home
11724 Cold Spring Harbor , NY Standard 3,073 $250,000+ $1,641,000

Other ZIP codes overlapping Cold Spring Harbor

These ZIP codes cover part of Cold Spring Harbor but are addressed as somewhere else.

ZIP codes overlapping Cold Spring Harbor
ZIP City Type Population Median income Median home
11743 Huntington , NY Standard 43,490 $183,187 $783,100

Map of Cold Spring Harbor ZIP codes

11724

The ZIP codes of Cold Spring Harbor, NY, 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 Cold Spring Harbor

The nearest larger towns are Huntington (19,948 people, 2.8 mi), Huntington Station (32,601 people, 3.0 mi) and Woodbury (9,348 people, 3.2 mi).

Towns near Cold Spring Harbor
TownPopulationDistance
Halesite 2,661 2.7 mi
Huntington 19,948 2.8 mi
Huntington Station 32,601 3.0 mi
Woodbury 9,348 3.2 mi
West Hills 5,369 3.3 mi
Oyster Bay 7,308 3.9 mi
East Norwich 2,697 3.9 mi
Lloyd Harbor 3,565 4.0 mi
Syosset 18,433 4.1 mi
South Huntington 9,779 4.4 mi
Greenlawn 15,210 4.7 mi
Muttontown 3,505 5.0 mi
Centerport 6,072 5.2 mi
Plainview 25,982 5.8 mi

More nearby: every ZIP code in Suffolk County · New York ZIP codes

Cite this page

zipcodes.pro. “Cold Spring Harbor, NY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ny/cold-spring-harbor

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