Marlboro, New York Zip Codes
📍 Marlboro is in Ulster County, New York with 1 zip code; the most populous is 12542.
Marlboro is a USPS city name in Ulster County, New York with a Census population of approximately 5,859 across its ZIP codes. Ulster County as a whole has 58 ZIP codes in this directory. Below you'll find every zip code serving Marlboro 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 Marlboro Zip Codes
Marlboro at a Glance
Marlboro has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 12542, has 5,859 residents.
Marlboro's ZIP has a household income of $123,517 and a home value of $356,300, a price-to-income ratio of 2.9, in line with the 2.9 New York ZIP median. Median rent across these ZIPs is $1,833 a month.
76% of households in Marlboro own their home (statewide ZIP median 80%). 43% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 4.0%, far below the 9.9% statewide ZIP median. Overall density is about 407 residents per square mile across 14 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.
Marlboro Zip Code Map
Interactive map of Marlboro, New York zip codes. Click any marker for details.