Mastic Beach, New York Zip Codes
📍 Mastic Beach is in Suffolk County, New York with 1 zip code; the most populous is 11951.
Mastic Beach is a USPS city name in Suffolk County, New York with a Census population of approximately 15,830 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Mastic Beach 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 Mastic Beach Zip Codes
Mastic Beach at a Glance
Mastic Beach has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11951, has 15,830 residents.
Mastic Beach's ZIP has a household income of $108,877 and a home value of $321,200, a price-to-income ratio of 3.0, in line with the 2.9 New York ZIP median. Median rent across these ZIPs is $2,313 a month.
81% of households in Mastic Beach own their home (statewide ZIP median 80%). 21% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 22.2%, far above the 9.9% statewide ZIP median. Overall density is about 3,298 residents per square mile across 5 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.
Mastic Beach Zip Code Map
Interactive map of Mastic Beach, New York zip codes. Click any marker for details.