Denver, New York Zip Codes
📍 Denver is in Delaware County, New York with 1 zip code; the most populous is 12421.
Denver is a USPS city name in Delaware County, New York with a Census population of approximately 238 across its ZIP codes. Delaware County as a whole has 35 ZIP codes in this directory. Below you'll find every zip code serving Denver 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 Denver Zip Codes
Denver at a Glance
Denver has 1 ZIP code in this directory: 1 standard delivery ZIP. Its one ZIP with published Census housing data, 12421, has 238 residents.
Denver's ZIP has a household income of $97,545 and a home value of $317,600, a price-to-income ratio of 3.3, above the 2.9 New York ZIP median.
71% of households in Denver own their home (statewide ZIP median 80%). 35% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 9.7%, in line with the 9.9% statewide ZIP median. Overall density is about 14 residents per square mile across 17 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.
Denver Zip Code Map
Interactive map of Denver, New York zip codes. Click any marker for details.