ZIP code · Seaford · New York · United States
ZIP code 11783 — Seaford
ZIP code 11783 serves Seaford, New York.
- Postal code
- 11783Single source Value from one source, not cross-checked.
- City
- Seaford
- County
- Nassau FIPS 36059
- State
- New York
- Country
- United States
- Coordinates
- 40.6795, -73.4910 — precision precise (locality)
View on OpenStreetMap - Population
- 21,588 (ZCTA, ACS 5-year)
- Population density
- 6,097 / sq mi
- Land area
- 3.5 sq mi (9.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $164,128
- Per-capita income
- $62,392
- Median age
- 41.4
- Households
- 7,090
- Housing units
- 7,320
- Median home value
- $626,700
- Median gross rent
- $2,806 / month
- Congressional districts
- NY-4 (also NY-3, 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 11783 with another ZIP · ZIPs within 25 miles · distance from 11783
Map of ZIP code 11783
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 28°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 42 | 44 | 50 | 60 | 70 | 79 | 85 | 84 | 78 | 67 | 56 | 47 |
| Avg low °F | 28 | 29 | 35 | 43 | 53 | 63 | 69 | 68 | 61 | 50 | 40 | 33 |
| Precip in | 3.3 | 2.8 | 4.1 | 3.8 | 3.3 | 3.8 | 3.2 | 3.7 | 3.6 | 3.7 | 3.1 | 4.3 |
NOAA 1991–2020 climate normals from the nearest station: WANTAGH CEDAR CREEK (1.9 mi) · NOAA NCEI
Places in ZIP 11783
- 12 schools
- 1 supermarkets
- 7 restaurants & cafés
- 5 parks
- 12 playgrounds
- 1 libraries
- 1 post offices
- 10 places of worship
- 1 banks
- 6 gas stations
- 2 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