Riverhead, New York Zip Codes
📍 Riverhead is in Suffolk County, New York with 1 zip code; the most populous is 11901.
Riverhead is a USPS city name in Suffolk County, New York with a Census population of approximately 32,921 across its ZIP codes. Suffolk County as a whole has 117 ZIP codes in this directory. Below you'll find every zip code serving Riverhead 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 Riverhead Zip Codes
Riverhead at a Glance
Riverhead has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 11901, has 32,921 residents.
Riverhead's ZIP has a household income of $83,252 and a home value of $437,500, a price-to-income ratio of 5.3, far above the 2.9 New York ZIP median. Median rent across these ZIPs is $2,195 a month.
70% of households in Riverhead 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 14.9%, far above the 9.9% statewide ZIP median. Overall density is about 581 residents per square mile across 57 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.
Riverhead Zip Code Map
Interactive map of Riverhead, New York zip codes. Click any marker for details.