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/SYOSSET

Syosset ZIP codes, New York

Syosset, NY has 2 ZIP codes (11791 and 11773) and area codes 516 and 363. The largest is 11791.

USPS city name
2 ZIP codes
Overlapping the city
1 more
Population
18,433
Area codes
516, 363

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

Syosset in numbers

About 18,433 people live in Syosset, in 5,998 households. The median household income is $187,273 a year, 2.2 times the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $874,300 (2.1 times the New York median), and median gross rent is $3,036 a month. The median age is 42.8; 69.1% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 41 minutes.

Population18,433Syosset18,433
Households5,998Syosset5,998
Median age42.8Syosset42.8New York39.8US 38.9
Median household income$187,273Syosset$187,273New York$85,974US $80,734
Median home value$874,300Syosset$874,300New York$423,800US $332,700
Median gross rent$3,036Syosset$3,036New York$1,621US $1,413
Bachelor's degree or higher69.1%Syosset69.1%New York40.2%US 35.7%
Mean commute40.9 minSyosset40.9 minNew York32.6 minUS 26.4 min
Population density3,705 / sq miSyosset3,705 / sq mi

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

ZIP codes addressed as Syosset

ZIP codes with the USPS city name Syosset
ZIP City Type Population Median income Median home
11791 Syosset , NY Standard 25,520 $202,962 $937,700
11773 Syosset , NY No street area — — —

Other ZIP codes overlapping Syosset

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

ZIP codes overlapping Syosset
ZIP City Type Population Median income Median home
11803 Plainview , NY Standard 29,713 $187,514 $800,200

Map of Syosset ZIP codes

1179111773

The ZIP codes of Syosset, 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 Syosset

The nearest larger towns are Plainview (25,982 people, 2.8 mi), Hicksville (43,780 people, 3.8 mi) and Melville (19,714 people, 5.4 mi).

Towns near Syosset
TownPopulationDistance
Woodbury 9,348 1.6 mi
Muttontown 3,505 1.9 mi
East Norwich 2,697 2.7 mi
Plainview 25,982 2.8 mi
Jericho 13,759 2.8 mi
West Hills 5,369 3.6 mi
Brookville 2,941 3.6 mi
Hicksville 43,780 3.8 mi
Oyster Bay 7,308 3.9 mi
Cold Spring Harbor 3,220 4.1 mi
Bethpage 17,123 4.7 mi
Old Bethpage 6,546 5.0 mi
New Cassel 14,551 5.1 mi
Old Westbury 4,241 5.4 mi

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

Cite this page

zipcodes.pro. “Syosset, NY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ny/syosset

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