ZIP code · Islip · New York · United States
ZIP code 11751 — Islip
ZIP code 11751 serves Islip, New York.
- Postal code
- 11751Single source Value from one source, not cross-checked.
- City
- Islip
- County
- Suffolk FIPS 36103
- State
- New York
- Country
- United States
- Coordinates
- 40.7348, -73.2221 — precision precise (locality)
View on OpenStreetMap - Population
- 13,152 (ZCTA, ACS 5-year)
- Population density
- 3,317 / sq mi
- Land area
- 4 sq mi (10.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $116,328
- Per-capita income
- $51,927
- Median age
- 46.6
- Households
- 5,010
- Housing units
- 5,246
- Median home value
- $501,900
- Median gross rent
- $2,238 / month
- Congressional district
- NY-2 (119th Congress)
- USDA hardiness zone
- 7b (5 to 10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 11751 with another ZIP · ZIPs within 25 miles · distance from 11751
Map of ZIP code 11751
Climate — monthly normals
Warmest month Aug (avg high 80°F), coldest Jan (avg low 26°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 39 | 40 | 46 | 56 | 64 | 74 | 80 | 80 | 73 | 63 | 53 | 44 |
| Avg low °F | 26 | 27 | 33 | 43 | 52 | 63 | 70 | 69 | 61 | 50 | 40 | 32 |
| Precip in | 3.5 | 4.6 | 4.4 | 3.8 | 3.5 | 3.7 | 4.7 | 5.8 | 4.3 | 3.6 | 3.0 | 4.9 |
NOAA 1991–2020 climate normals from the nearest station: MOLLOY CERCOM (7.0 mi) · NOAA NCEI
Places in ZIP 11751
- 7 schools
- 1 doctors & dentists
- 3 supermarkets
- 14 restaurants & cafés
- 3 parks
- 3 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 5 places of worship
- 1 banks
- 4 gas stations
- 1 police & fire stations
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 · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page