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/GRANTHAM

Grantham ZIP code, New Hampshire

The ZIP code for Grantham, NH is 03753, and its area code is 603.

USPS city name
1 ZIP code
Population
3,509
Area code
603

NANPA lists no telephone rate centre for Grantham itself, so these are the area codes of the nearest one, Meriden (5.6 miles). A town on an area-code boundary can differ from its neighbour.

Grantham in numbers

About 3,509 people live in Grantham, in 1,449 households. The median household income is $106,285 a year, 7% above the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $343,900 (15% below the New Hampshire median).

Population3,509Grantham3,509
Households1,449Grantham1,449
Median household income$106,285Grantham$106,285New Hampshire$99,031US $80,734
Median home value$343,900Grantham$343,900New Hampshire$402,500US $332,700

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

ZIP codes addressed as Grantham

ZIP codes with the USPS city name Grantham
ZIP City Type Population Median income Median home
03753 Grantham , NH Standard 3,509 $106,285 $343,900

Map of Grantham ZIP codes

The ZIP codes of Grantham, NH, 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 Grantham

The nearest larger towns are Lebanon (14,999 people, 9.7 mi), Newport (4,758 people, 11 mi) and Claremont (13,078 people, 13 mi).

Towns near Grantham
TownPopulationDistance
Lebanon 14,999 9.7 mi
Newport 4,758 10.6 mi
White River Junction, VT 3,364 12.9 mi
Claremont 13,078 12.9 mi
Wilder, VT 3,087 14.0 mi
Hanover 8,479 14.8 mi
Springfield, VT 4,237 22.6 mi
Franklin 8,799 24.4 mi
Plymouth 4,969 27.1 mi
Tilton Northfield 3,101 28.3 mi
Henniker 2,993 28.5 mi

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

Cite this page

zipcodes.pro. “Grantham, NH ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/nh/grantham

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