Home > NY > Nassau County > Seaford > Zip 11783

Zip Code 11783 — Seaford, NY

11783 is a ZIP Code associated with Seaford, NY, located within Nassau. The postal region supports an estimated population of 21,127 residents across Data Pending housing units, with a population density of 2,303.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.677660, -73.490680)

Data MetricLocal Statistic
Postal / Zip Code11783
Primary CitySeaford
State / ProvinceNY
CountyNassau
Total Population21,127
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2,303.1 people/sq mi
TimezoneAmerica/New_York

How 11783 Compares

MetricZIP 11783Nassau CountyNY State Average
Population21,1271,369,35919,771,902
Median IncomeData PendingN/AN/A
Population Density2,303.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 11710Bellmore2.2 mi34,834N/A
Zip 11762Massapequa Park2.3 mi22,487N/A
Zip 11793Wantagh2.4 mi32,349N/A
Zip 11758Massapequa2.5 mi54,375N/A
Zip 11566Merrick3.5 mi34,741N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →