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/CORNWALLVILLE

Cornwallville ZIP code, New York

The ZIP code for Cornwallville, NY is 12418, and its area codes are 518 and 838.

USPS city name
1 ZIP code
Population
427
Area codes
518, 838

NANPA lists no telephone rate centre for Cornwallville itself, so these are the area codes of the nearest one, Oak Hill (4.9 miles). A town on an area-code boundary can differ from its neighbour.

Cornwallville in numbers

About 427 people live in Cornwallville, in 198 households. The median household income is $98,472 a year, 15% above the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $254,500 (40% below the New York median).

Population427Cornwallville427
Households198Cornwallville198
Median household income$98,472Cornwallville$98,472New York$85,974US $80,734
Median home value$254,500Cornwallville$254,500New York$423,800US $332,700

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

ZIP codes addressed as Cornwallville

ZIP codes with the USPS city name Cornwallville
ZIP City Type Population Median income Median home
12418 Cornwallville , NY Standard 427 $98,472 $254,500

Map of Cornwallville ZIP codes

12418

The ZIP codes of Cornwallville, 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 Cornwallville

The nearest larger towns are East Durham (495 people, 3.5 mi), Greenville (620 people, 8.1 mi) and Cairo (1,660 people, 8.5 mi).

Towns near Cornwallville
TownPopulationDistance
Coxsackie 2,737 18.0 mi
Catskill 3,779 18.4 mi
Ravena 3,243 19.6 mi
Hudson 5,865 20.5 mi
Saugerties 3,884 22.6 mi
Voorheesville 2,824 23.4 mi
Westmere 8,334 27.1 mi
Cobleskill 4,682 27.6 mi
Albany 100,492 28.1 mi
East Greenbush 6,581 28.4 mi
Hampton Manor 5,334 28.4 mi
Rensselaer 9,287 29.5 mi
Roessleville 10,968 29.9 mi

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

Cite this page

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

Underlying data is public domain or openly licensed — sources, vintages and licences.