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/NY/NORTHAMPTON

Northampton ZIP codes, New York

No ZIP code is named for Northampton, NY; addresses there use a neighbouring town's name. The ZIP code covering it is 11901. Its area codes are 631 and 934.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
499
Area codes
631, 934

NANPA lists no telephone rate centre for Northampton itself, so these are the area codes of the nearest one, Riverhead (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Northampton in numbers

About 499 people live in Northampton, in 180 households. The median household income is $78,421 a year, 9% below the New York median of $85,974 (US: $80,734). The median owner-occupied home is valued at $393,300 (7% below the New York median). The median age is 43.0; 18.1% of adults 25 and over hold a bachelor's degree or higher (40.2% across New York).

Population499Northampton499
Households180Northampton180
Median age43.0Northampton43.0New York39.8US 38.9
Median household income$78,421Northampton$78,421New York$85,974US $80,734
Median home value$393,300Northampton$393,300New York$423,800US $332,700
Bachelor's degree or higher18.1%Northampton18.1%New York40.2%US 35.7%
Population density44 / sq miNorthampton44 / sq mi

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

ZIP codes covering Northampton

These ZIP codes cover part of Northampton but are addressed as somewhere else.

ZIP codes overlapping Northampton
ZIP City Type Population Median income Median home
11901 Riverhead , NY Standard 33,091 $85,061 $453,800

Map of Northampton ZIP codes

11901

The ZIP codes of Northampton, NY, 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 Northampton

The nearest larger towns are Riverside (4,038 people, 2.2 mi), Westhampton (3,900 people, 2.3 mi) and Eastport (2,414 people, 3.8 mi).

Towns near Northampton
TownPopulationDistance
Riverside 4,038 2.2 mi
Westhampton 3,900 2.3 mi
Flanders 6,609 4.3 mi
Westhampton Beach 2,574 5.1 mi
Riverhead 14,936 5.3 mi
Manorville 14,233 5.5 mi
Calverton 5,618 5.6 mi
East Moriches 6,260 6.0 mi
East Quogue 5,406 6.0 mi
Baiting Hollow 2,614 6.8 mi
Center Moriches 9,127 7.9 mi
Hampton Bays 15,706 8.7 mi
Wading River 8,359 8.7 mi
Mastic 15,708 9.7 mi

More nearby: every ZIP code in Suffolk County · New York ZIP codes

Cite this page

zipcodes.pro. “Northampton, NY ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ny/northampton

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