Middle Island, New York Zip Codes
📍 Middle Island is in Suffolk County, New York with 1 zip code; the most populous is 11953.
Middle Island is a USPS city name in Suffolk County, New York with a Census population of approximately 13,383 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Middle Island 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 Middle Island Zip Codes
Middle Island at a Glance
Middle Island has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11953, has 13,383 residents.
Middle Island's ZIP has a household income of $92,049 and a home value of $358,400, a price-to-income ratio of 3.9, above the 2.9 New York ZIP median. Median rent across these ZIPs is $1,935 a month.
65% of households in Middle Island own their home (statewide ZIP median 80%). 32% of adults hold a bachelor's degree, in line with the 31% statewide median. The median poverty rate is 10.8%, above the 9.9% statewide ZIP median. Overall density is about 1,299 residents per square mile across 10 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.
Middle Island Zip Code Map
Interactive map of Middle Island, New York zip codes. Click any marker for details.