Old Westbury, New York Zip Codes
📍 Old Westbury is in Nassau County, New York with 1 zip code; the most populous is 11568.
Old Westbury is a USPS city name in Nassau County, New York with a Census population of approximately 4,198 across its ZIP codes. Nassau County as a whole has 110 ZIP codes in this directory. Below you'll find every zip code serving Old Westbury 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 Old Westbury Zip Codes
Old Westbury at a Glance
Old Westbury has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11568, has 4,198 residents.
Old Westbury's ZIP has a household income of $250,001 and a home value of more than $2,000,000, a price-to-income ratio of at least 8.0, far above the 2.9 New York ZIP median. Median rent across these ZIPs is $3,501 a month.
94% of households in Old Westbury own their home (statewide ZIP median 80%). 76% of adults hold a bachelor's degree, far above the 31% statewide median. The median poverty rate is 5.2%, below the 9.9% statewide ZIP median. Overall density is about 483 residents per square mile across 9 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.
Old Westbury Zip Code Map
Interactive map of Old Westbury, New York zip codes. Click any marker for details.