Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/NY/DENVER

Denver ZIP code, New York

The ZIP code for Denver, NY is 12421.

USPS city name
1 ZIP code
Population
261

Denver in numbers

About 261 people live in Denver, in 149 households. The median household income is $100,819 a year, 17% above the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $372,200 (12% below the New York median).

Population261Denver261
Households149Denver149
Median household income$100,819Denver$100,819New York$85,974US $80,734
Median home value$372,200Denver$372,200New York$423,800US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Denver. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Denver

ZIP codes with the USPS city name Denver
ZIP City Type Population Median income Median home
12421 Denver , NY Standard 261 $100,819 $372,200

Map of Denver ZIP codes

12421

The ZIP codes of Denver, NY, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Denver

The nearest larger towns are Pine Hill (317 people, 9.1 mi), Margaretville (617 people, 9.7 mi) and Hobart (409 people, 10 mi).

Towns near Denver
TownPopulationDistance
Delhi 3,136 19.5 mi
Cobleskill 4,682 29.3 mi

More nearby: every ZIP code in Delaware County · New York ZIP codes

Cite this page

zipcodes.pro. “Denver, NY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ny/denver

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