Mid Island, New York Zip Codes
📍 Mid Island is in Suffolk County, New York with 1 zip code; the most populous is 11805.
Mid Island is a USPS city name in Suffolk County, New York. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Mid 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 Mid Island Zip Codes
Mid Island at a Glance
Mid Island has 1 ZIP code in this directory: 1 standard delivery ZIP.
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.
Mid Island Zip Code Map
Interactive map of Mid Island, New York zip codes. Click any marker for details.