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/PORTSMOUTH

Portsmouth ZIP codes, New Hampshire

Portsmouth, NH has 4 ZIP codes (03801, 03802, 03803 and 03804) and area code 603. The largest is 03801.

USPS city name
4 ZIP codes
Population
22,545
Area code
603

Portsmouth in numbers

About 22,545 people live in Portsmouth, in 10,902 households, the 7th-largest of New Hampshire's 100 census places. The median household income is $106,219 a year, 7% above the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $688,500 (71% above the New Hampshire median), and median gross rent is $1,869 a month. The median age is 42.9; 64.0% of adults 25 and over hold a bachelor's degree or higher (40.6% across New Hampshire); the average commute takes 22 minutes.

Population22,545Portsmouth22,545
Households10,902Portsmouth10,902
Median age42.9Portsmouth42.9New Hampshire43.3US 38.9
Median household income$106,219Portsmouth$106,219New Hampshire$99,031US $80,734
Median home value$688,500Portsmouth$688,500New Hampshire$402,500US $332,700
Median gross rent$1,869Portsmouth$1,869New Hampshire$1,491US $1,413
Bachelor's degree or higher64.0%Portsmouth64.0%New Hampshire40.6%US 35.7%
Mean commute22.2 minPortsmouth22.2 minNew Hampshire26.7 minUS 26.4 min
Population density1,440 / sq miPortsmouth1,440 / sq mi

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

ZIP codes addressed as Portsmouth

ZIP codes with the USPS city name Portsmouth
ZIP City Type Population Median income Median home
03801 Portsmouth , NH Standard 23,484 $106,756 $699,900
03802 Portsmouth , NH No street area — — —
03803 Portsmouth , NH No street area — — —
03804 Portsmouth , NH No street area — — —

Map of Portsmouth ZIP codes

03801038020380303804

The ZIP codes of Portsmouth, 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 Portsmouth

The nearest larger towns are Dover (33,364 people, 10 mi), Rochester (33,144 people, 19 mi) and Haverhill, MA (67,698 people, 25 mi).

Towns near Portsmouth
TownPopulationDistance
Kittery, ME 5,110 2.9 mi
South Eliot, ME 4,203 5.2 mi
Newmarket 5,679 8.2 mi
Hampton 10,101 8.4 mi
York Harbor, ME 4,240 8.8 mi
Durham 10,681 9.2 mi
Dover 33,364 10.1 mi
Exeter 9,964 10.1 mi
Hampton Beach 2,605 10.3 mi
South Berwick, ME 3,381 11.7 mi
Somersworth 12,111 14.4 mi
Epping 2,796 16.2 mi
Salisbury, MA 5,656 16.2 mi
Amesbury, MA 17,403 17.0 mi

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

Cite this page

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

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