Greenlawn, New York Zip Codes
📍 Greenlawn is in Suffolk County, New York with 1 zip code; the most populous is 11740.
Greenlawn is a USPS city name in Suffolk County, New York with a Census population of approximately 10,699 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Greenlawn 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 Greenlawn Zip Codes
Greenlawn at a Glance
Greenlawn has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11740, has 10,699 residents.
Greenlawn's ZIP has a household income of $161,705 and a home value of $686,900, a price-to-income ratio of 4.2, above the 2.9 New York ZIP median.
81% of households in Greenlawn own their home (statewide ZIP median 80%). 57% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 5.8%, below the 9.9% statewide ZIP median. Overall density is about 2,892 residents per square mile across 4 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.
Greenlawn Zip Code Map
Interactive map of Greenlawn, New York zip codes. Click any marker for details.