Grahamsville, New York Zip Codes
📍 Grahamsville is in Sullivan County, New York with 1 zip code; the most populous is 12740.
Grahamsville is a USPS city name in Sullivan County, New York with a Census population of approximately 1,683 across its ZIP codes. Sullivan County as a whole has 56 ZIP codes in this directory. Below you'll find every zip code serving Grahamsville 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 Grahamsville Zip Codes
Grahamsville at a Glance
Grahamsville has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 12740, has 1,683 residents.
Grahamsville's ZIP has a household income of $91,630 and a home value of $279,000, a price-to-income ratio of 3.0, above the 2.9 New York ZIP median. Median rent across these ZIPs is $1,031 a month.
77% of households in Grahamsville own their home (statewide ZIP median 80%). 37% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 6.4%, below the 9.9% statewide ZIP median. Overall density is about 23 residents per square mile across 72 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.
Grahamsville Zip Code Map
Interactive map of Grahamsville, New York zip codes. Click any marker for details.