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

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zipcodes.pro — CITY/NY/SMITHTOWN

Smithtown ZIP code, New York

The ZIP code for Smithtown, NY is 11787, and its area codes are 631 and 934.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
24,375
Area codes
631, 934

Mail addressed to Smithtown uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Smithtown in numbers

About 24,375 people live in Smithtown, in 8,033 households. The median household income is $150,664 a year, 75% above the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $704,700 (66% above the New York median), and median gross rent is $2,020 a month. The median age is 47.0; 51.2% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York); the average commute takes 33 minutes.

Population24,375Smithtown24,375
Households8,033Smithtown8,033
Median age47.0Smithtown47.0New York39.8US 38.9
Median household income$150,664Smithtown$150,664New York$85,974US $80,734
Median home value$704,700Smithtown$704,700New York$423,800US $332,700
Median gross rent$2,020Smithtown$2,020New York$1,621US $1,413
Bachelor's degree or higher51.2%Smithtown51.2%New York40.2%US 35.7%
Mean commute33.2 minSmithtown33.2 minNew York32.6 minUS 26.4 min
Population density2,044 / sq miSmithtown2,044 / sq mi

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

ZIP codes addressed as Smithtown

ZIP codes with the USPS city name Smithtown
ZIP City Type Population Median income Median home
11787 Smithtown , NY Standard 34,499 $143,101 $679,800

Other ZIP codes overlapping Smithtown

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

ZIP codes overlapping Smithtown
ZIP City Type Population Median income Median home
11754 Kings Park , NY Standard 17,565 $123,393 $624,700
11780 Saint James , NY Standard 15,018 $144,577 $723,200

Map of Smithtown ZIP codes

11787

The ZIP codes of Smithtown, 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 Smithtown

The nearest larger towns are Commack (36,558 people, 3.6 mi), Central Islip (38,373 people, 5.2 mi) and Brentwood (152,614 people, 5.4 mi).

Towns near Smithtown
TownPopulationDistance
Hauppauge 20,793 2.4 mi
Kings Park 16,516 2.5 mi
Nesconset 13,833 3.5 mi
Commack 36,558 3.6 mi
St. James 13,244 3.6 mi
Islandia 3,600 4.2 mi
Lake Grove 11,061 5.2 mi
Central Islip 38,373 5.2 mi
Brentwood 152,614 5.4 mi
Fort Salonga 10,199 5.6 mi
Lake Ronkonkoma 18,221 5.7 mi
East Northport 19,700 5.8 mi
Stony Brook 12,868 5.8 mi
Ronkonkoma 18,709 6.1 mi

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

Cite this page

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

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