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/PETERBOROUGH

Peterborough ZIP code, New Hampshire

The ZIP code for Peterborough, NH is 03458, and its area code is 603.

USPS city name
1 ZIP code
Population
2,539
Area code
603

Peterborough in numbers

About 2,539 people live in Peterborough, in 1,394 households, the 41st-largest of New Hampshire's 100 census places. The median household income is $85,833 a year, 13% below the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $379,300 (6% below the New Hampshire median), and median gross rent is $1,515 a month. The median age is 55.5; 57.4% of adults 25 and over hold a bachelor's degree or higher (40.6% across New Hampshire); the average commute takes 25 minutes.

Population2,539Peterborough2,539
Households1,394Peterborough1,394
Median age55.5Peterborough55.5New Hampshire43.3US 38.9
Median household income$85,833Peterborough$85,833New Hampshire$99,031US $80,734
Median home value$379,300Peterborough$379,300New Hampshire$402,500US $332,700
Median gross rent$1,515Peterborough$1,515New Hampshire$1,491US $1,413
Bachelor's degree or higher57.4%Peterborough57.4%New Hampshire40.6%US 35.7%
Mean commute24.9 minPeterborough24.9 minNew Hampshire26.7 minUS 26.4 min
Population density533 / sq miPeterborough533 / sq mi

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

ZIP codes addressed as Peterborough

ZIP codes with the USPS city name Peterborough
ZIP City Type Population Median income Median home
03458 Peterborough , NH Standard 6,872 $98,684 $413,600

Map of Peterborough ZIP codes

03458

The ZIP codes of Peterborough, 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 Peterborough

The nearest larger towns are Jaffrey (3,277 people, 5.5 mi), Winchendon, MA (4,331 people, 14 mi) and Milford (8,956 people, 15 mi).

Towns near Peterborough
TownPopulationDistance
Jaffrey 3,277 5.5 mi
Winchendon, MA 4,331 14.2 mi
Milford 8,956 14.6 mi
Keene 22,939 18.3 mi
Baldwinville, MA 2,528 19.7 mi
Gardner, MA 21,148 20.3 mi
Fitchburg, MA 41,798 20.4 mi
Goffstown 3,490 20.9 mi
Henniker 2,993 22.2 mi
Athol, MA 8,801 23.9 mi
Pinardville 4,418 24.2 mi
East Merrimack 5,081 24.3 mi
Orange, MA 3,737 25.2 mi
Nashua 91,294 25.4 mi

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

Cite this page

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

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