Central Islip, New York Zip Codes
📍 Central Islip is in Suffolk County, New York with 1 zip code; the most populous is 11722.
Central Islip is a USPS city name in Suffolk County, New York with a Census population of approximately 38,443 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Central 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 Central Islip Zip Codes
Central Islip at a Glance
Central Islip has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11722, has 38,443 residents.
Central Islip's ZIP has a household income of $110,365 and a home value of $407,100, a price-to-income ratio of 3.7, above the 2.9 New York ZIP median. Median rent across these ZIPs is $2,094 a month.
77% of households in Central Islip own their home (statewide ZIP median 80%). 18% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 9.3%, below the 9.9% statewide ZIP median. Overall density is about 5,492 residents per square mile across 7 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.
Central Islip Zip Code Map
Interactive map of Central Islip, New York zip codes. Click any marker for details.