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/SEABROOK

Seabrook ZIP code, New Hampshire

The ZIP code for Seabrook, NH is 03874, and its area code is 603.

USPS city name
1 ZIP code
Population
8,487
Area code
603

Seabrook in numbers

About 8,487 people live in Seabrook, in 3,889 households. The median household income is $82,995 a year, 16% below the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $446,100 (11% above the New Hampshire median).

Population8,487Seabrook8,487
Households3,889Seabrook3,889
Median household income$82,995Seabrook$82,995New Hampshire$99,031US $80,734
Median home value$446,100Seabrook$446,100New Hampshire$402,500US $332,700

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

ZIP codes addressed as Seabrook

ZIP codes with the USPS city name Seabrook
ZIP City Type Population Median income Median home
03874 Seabrook , NH Standard 8,487 $82,995 $446,100

Map of Seabrook ZIP codes

03874

The ZIP codes of Seabrook, 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 Seabrook

The nearest larger towns are Hampton (10,101 people, 4.6 mi), Newburyport, MA (18,652 people, 5.1 mi) and Amesbury, MA (17,403 people, 5.3 mi).

Towns near Seabrook
TownPopulationDistance
Hampton Beach 2,605 3.3 mi
Salisbury, MA 5,656 3.7 mi
Hampton 10,101 4.6 mi
Newburyport, MA 18,652 5.1 mi
Amesbury, MA 17,403 5.3 mi
Exeter 9,964 7.8 mi
Portsmouth 22,545 12.9 mi
Haverhill, MA 67,698 13.4 mi
Newmarket 5,679 13.9 mi
Ipswich, MA 4,924 14.5 mi
Kittery, ME 5,110 15.6 mi
Epping 2,796 15.9 mi
Topsfield, MA 2,624 17.5 mi
South Eliot, ME 4,203 17.7 mi

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

Cite this page

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

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