Home > NY > Suffolk County > Islip > Zip 11751

Zip Code 11751 — Islip, NY

ZIP Code 11751 is associated with Islip, NY, in Suffolk County. The listed population estimate is 13,726; estimated density is 1,337.0 people per square mile. Among records with population estimates, it ranks #44 of 106 in Suffolk County and #428 of 1,778 in NY.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.729990, -73.214240)

Data MetricLocal Statistic
Postal / Zip Code11751
Primary CityIslip
State / ProvinceNY
CountySuffolk
Total Population13,726
Population Density1,337.0 people/sq mi
TimezoneAmerica/New_York

How 11751 Compares

MetricZIP 11751Suffolk County recordsNY records
Population estimate13,7261,476,044 (sum)19,771,902 (sum)
Population Density1,337.0 /sq mi----
County population rank#44 of 106----
State population rank#428 of 1,778----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in NY

ZIP CodeCityDistancePopulation estimate
ZIP 11730East Islip1.6 mi14,247
ZIP 11706Bay Shore2.2 mi68,976
ZIP 11718Brightwaters2.7 mi3,179
ZIP 11752Islip Terrace2.9 mi9,204
ZIP 11739Great River3.0 mi1,225

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 →