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/NH/MOUNT-WASHINGTON

Mount Washington ZIP code, New Hampshire

The ZIP code for Mount Washington, NH is 03589, and its area code is 603.

USPS city name
1 ZIP code
Area code
603

NANPA lists no telephone rate centre for Mount Washington itself, so these are the area codes of the nearest one, West Stewartstown (3.4 miles). A town on an area-code boundary can differ from its neighbour.

ZIP codes addressed as Mount Washington

ZIP codes with the USPS city name Mount Washington
ZIP City Type
03589 Mount Washington , NH No street area

Towns near Mount Washington

Towns near Mount Washington
TownPopulationDistance
Berlin 9,383 15.6 mi

More nearby: every ZIP code in Coos County · New Hampshire ZIP codes

Cite this page

zipcodes.pro. “Mount Washington, NH ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nh/mount-washington

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