Wilmington, New York Zip Codes
📍 Wilmington is in Essex County, New York with 1 zip code; the most populous is 12997.
Wilmington is a USPS city name in Essex County, New York with a Census population of approximately 1,280 across its ZIP codes. Essex County as a whole has 31 ZIP codes in this directory. Below you'll find every zip code serving Wilmington 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 Wilmington Zip Codes
Wilmington at a Glance
Wilmington has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 12997, has 1,280 residents.
Wilmington's ZIP has a household income of $80,568 and a home value of $272,800, a price-to-income ratio of 3.4, above the 2.9 New York ZIP median. Median rent across these ZIPs is $1,095 a month.
84% of households in Wilmington own their home (statewide ZIP median 80%). 31% of adults hold a bachelor's degree, in line with the 31% statewide median. The median poverty rate is 3.3%, far below the 9.9% statewide ZIP median. Overall density is about 20 residents per square mile across 65 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.
Wilmington Zip Code Map
Interactive map of Wilmington, New York zip codes. Click any marker for details.