Cold Spring Harbor, New York Zip Codes
📍 Cold Spring Harbor is in Suffolk County, New York with 1 zip code; the most populous is 11724.
Cold Spring Harbor is a USPS city name in Suffolk County, New York with a Census population of approximately 2,956 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Cold Spring Harbor 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 Cold Spring Harbor Zip Codes
Cold Spring Harbor at a Glance
Cold Spring Harbor has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11724, has 2,956 residents.
Cold Spring Harbor's ZIP has a household income of $250,001 and a home value of $1,571,600, a price-to-income ratio of 6.3, far above the 2.9 New York ZIP median. Median rent across these ZIPs is $2,692 a month.
95% of households in Cold Spring Harbor own their home (statewide ZIP median 80%). 80% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 2.5%, far below the 9.9% statewide ZIP median. Overall density is about 758 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.
Cold Spring Harbor Zip Code Map
Interactive map of Cold Spring Harbor, New York zip codes. Click any marker for details.