Home > NY > Suffolk County > Mastic Beach > Zip 11951

Zip Code 11951 — Mastic Beach, NY

11951 is a ZIP Code associated with Mastic Beach, NY, located within Suffolk. The postal region supports an estimated population of 15,938 residents across Data Pending housing units, with a population density of 1,282.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.766240, -72.836550)

Data MetricLocal Statistic
Postal / Zip Code11951
Primary CityMastic Beach
State / ProvinceNY
CountySuffolk
Total Population15,938
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,282.3 people/sq mi
TimezoneAmerica/New_York

How 11951 Compares

MetricZIP 11951Suffolk CountyNY State Average
Population15,9381,476,04419,771,902
Median IncomeData PendingN/AN/A
Population Density1,282.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 11950Mastic2.8 mi17,599N/A
Zip 11955Moriches3.0 mi2,458N/A
Zip 11967Shirley3.2 mi27,975N/A
Zip 11934Center Moriches3.3 mi9,418N/A
Zip 11719Brookhaven4.0 mi3,235N/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 →