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/MARLBOROUGH

Marlborough ZIP code, New Hampshire

The ZIP code for Marlborough, NH is 03455, and its area code is 603.

USPS city name
1 ZIP code
Population
1,048
Area code
603

Marlborough in numbers

About 1,048 people live in Marlborough, in 511 households. The median household income is $67,356 a year, 32% below the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $261,700 (35% below the New Hampshire median), and median gross rent is $973 a month. The median age is 47.6; 36.3% of adults 25 and over hold a bachelor's degree or higher (40.6% across New Hampshire); the average commute takes 21 minutes.

Population1,048Marlborough1,048
Households511Marlborough511
Median age47.6Marlborough47.6New Hampshire43.3US 38.9
Median household income$67,356Marlborough$67,356New Hampshire$99,031US $80,734
Median home value$261,700Marlborough$261,700New Hampshire$402,500US $332,700
Median gross rent$973Marlborough$973New Hampshire$1,491US $1,413
Bachelor's degree or higher36.3%Marlborough36.3%New Hampshire40.6%US 35.7%
Mean commute20.7 minMarlborough20.7 minNew Hampshire26.7 minUS 26.4 min
Population density621 / sq miMarlborough621 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Marlborough CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Marlborough

ZIP codes with the USPS city name Marlborough
ZIP City Type Population Median income Median home
03455 Marlborough , NH Standard 2,242 $69,395 $268,000

Map of Marlborough ZIP codes

03455

The ZIP codes of Marlborough, 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 Marlborough

The nearest larger towns are Troy (1,081 people, 5.7 mi), Keene (22,939 people, 5.9 mi) and West Swanzey (1,188 people, 6.1 mi).

Towns near Marlborough
TownPopulationDistance
Keene 22,939 5.9 mi
Jaffrey 3,277 11.5 mi
Peterborough 2,539 12.8 mi
Winchendon, MA 4,331 17.7 mi
Brattleboro, VT 7,657 17.8 mi
West Brattleboro, VT 2,749 20.0 mi
Bellows Falls, VT 2,891 20.2 mi
Orange, MA 3,737 21.1 mi
Athol, MA 8,801 21.5 mi
Baldwinville, MA 2,528 21.8 mi
Gardner, MA 21,148 24.9 mi
Milford 8,956 27.5 mi
Henniker 2,993 27.5 mi
Turners Falls, MA 4,124 27.6 mi

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

Cite this page

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

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