ZIP code · Stony Brook · New York · United States

ZIP code 11794 — Stony Brook

ZIP code 11794 serves Stony Brook, New York.

Postal code
11794
Single source Value from one source, not cross-checked.
City
Stony Brook
County
Suffolk FIPS 36103
State
New York
Country
United States
Coordinates
40.9257, -73.1409 — precision precise (locality)
View on OpenStreetMap
Population
1,519 (ZCTA, ACS 5-year)
Population density
6,668 / sq mi
Land area
0.2 sq mi (0.6 km²) (ZCTA, ACS 5-year)
Per-capita income
$4,149
Median age
19.8
Households
0
Housing units
0
Congressional district
NY-1 (119th Congress)
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area codes
631, 934
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 83°F), coldest Jan (avg low 26°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F404148606978838275645345
Avg low °F262632415060666560493931

NOAA 1991–2020 climate normals from the nearest station: SETAUKET STRONG (3.0 mi) · NOAA NCEI

Places in ZIP 11794

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI. Data generated on 2026-08-21. Methodology · Report an error on this page