West Islip, New York Zip Codes
📍 West Islip is in Suffolk County, New York with 1 zip code; the most populous is 11795.
West Islip is a USPS city name in Suffolk County, New York with a Census population of approximately 25,063 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving West Islip with population, income and home value, a map, and the city's affordability profile.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All West Islip Zip Codes
West Islip at a Glance
West Islip has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11795, has 25,063 residents.
West Islip's ZIP has a household income of $171,068 and a home value of $598,800, a price-to-income ratio of 3.5, above the 2.9 New York ZIP median. Median rent across these ZIPs is $2,660 a month.
96% of households in West Islip own their home (statewide ZIP median 80%). 51% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 2.4%, far below the 9.9% statewide ZIP median. Overall density is about 4,397 residents per square mile across 6 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 New York ZIP Code Affordability Report.
West Islip Zip Code Map
Interactive map of West Islip, New York zip codes. Click any marker for details.