Selden, New York Zip Codes
📍 Selden is in Suffolk County, New York with 1 zip code; the most populous is 11784.
Selden is a USPS city name in Suffolk County, New York with a Census population of approximately 25,986 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Selden 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 Selden Zip Codes
Selden at a Glance
Selden has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11784, has 25,986 residents.
Selden's ZIP has a household income of $105,268 and a home value of $435,600, a price-to-income ratio of 4.1, above the 2.9 New York ZIP median. Median rent across these ZIPs is $2,273 a month.
86% of households in Selden own their home (statewide ZIP median 80%). 30% of adults hold a bachelor's degree, in line with the 31% statewide median. The median poverty rate is 7.0%, below the 9.9% statewide ZIP median. Overall density is about 4,725 residents per square mile across 6 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.
Selden Zip Code Map
Interactive map of Selden, New York zip codes. Click any marker for details.