Mamaroneck, New York Zip Codes
📍 Mamaroneck is in Westchester County, New York with 1 zip code; the most populous is 10543.
Mamaroneck is a USPS city name in Westchester County, New York with a Census population of approximately 21,022 across its ZIP codes. Westchester County as a whole has 92 ZIP codes in this directory. Below you'll find every zip code serving Mamaroneck 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 Mamaroneck Zip Codes
Mamaroneck at a Glance
Mamaroneck has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 10543, has 21,022 residents.
Mamaroneck's ZIP has a household income of $128,418 and a home value of $710,000, a price-to-income ratio of 5.5, far above the 2.9 New York ZIP median. Median rent across these ZIPs is $2,030 a month.
60% of households in Mamaroneck 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 7.4%, below the 9.9% statewide ZIP median. Overall density is about 4,889 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.
Mamaroneck Zip Code Map
Interactive map of Mamaroneck, New York zip codes. Click any marker for details.