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/LANCASTER

Lancaster ZIP code, New Hampshire

The ZIP code for Lancaster, NH is 03584, and its area code is 603.

USPS city name
1 ZIP code
Population
2,230
Area code
603

Lancaster in numbers

About 2,230 people live in Lancaster, in 892 households, the 43rd-largest of New Hampshire's 100 census places. The median household income is $66,765 a year, 33% below the New Hampshire median of $99,031 (US: $80,734). The median owner-occupied home is valued at $200,500 (50% below the New Hampshire median), and median gross rent is $1,036 a month. The median age is 38.6; 23.4% of adults 25 and over hold a bachelor's degree or higher (40.6% across New Hampshire); the average commute takes 20 minutes.

Population2,230Lancaster2,230
Households892Lancaster892
Median age38.6Lancaster38.6New Hampshire43.3US 38.9
Median household income$66,765Lancaster$66,765New Hampshire$99,031US $80,734
Median home value$200,500Lancaster$200,500New Hampshire$402,500US $332,700
Median gross rent$1,036Lancaster$1,036New Hampshire$1,491US $1,413
Bachelor's degree or higher23.4%Lancaster23.4%New Hampshire40.6%US 35.7%
Mean commute19.7 minLancaster19.7 minNew Hampshire26.7 minUS 26.4 min
Population density749 / sq miLancaster749 / sq mi

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

ZIP codes addressed as Lancaster

ZIP codes with the USPS city name Lancaster
ZIP City Type Population Median income Median home
03584 Lancaster , NH Standard 3,501 $66,768 $209,500

Map of Lancaster ZIP codes

03584

The ZIP codes of Lancaster, 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 Lancaster

The nearest larger towns are Littleton (4,114 people, 15 mi), Berlin (9,383 people, 15 mi) and St. Johnsbury, VT (5,859 people, 22 mi).

Towns near Lancaster
TownPopulationDistance
Littleton 4,114 14.5 mi
Berlin 9,383 14.6 mi
St. Johnsbury, VT 5,859 21.8 mi

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

Cite this page

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

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