Mount Marion, New York Zip Codes
📍 Mount Marion is in Ulster County, New York with 1 zip code; the most populous is 12456.
Mount Marion is a USPS city name in Ulster County, New York with a Census population of approximately 666 across its ZIP codes. Ulster County as a whole has 58 ZIP codes in this directory. Below you'll find every zip code serving Mount Marion 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 Mount Marion Zip Codes
Mount Marion at a Glance
Mount Marion has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 12456, has 666 residents.
Mount Marion's ZIP has a household income of $92,585 and a home value of $182,700, a price-to-income ratio of 2.0, below the 2.9 New York ZIP median.
81% of households in Mount Marion own their home (statewide ZIP median 80%). 18% of adults hold a bachelor's degree, below the 31% statewide median. The median poverty rate is 4.8%, far below the 9.9% statewide ZIP median. Overall density is about 1,332 residents per square mile across 1 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.
Mount Marion Zip Code Map
Interactive map of Mount Marion, New York zip codes. Click any marker for details.