Home / New Hampshire ZIP Codes / ZIP Code 03237

ZIP code 03237 belongs to Gilmanton, New Hampshire, in Belknap. If you are mailing a letter or package to this area, use Gilmanton, NH 03237 in the address. On this page you will find the city and county for 03237, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.

What City Is ZIP Code 03237?

The city for ZIP code 03237 is Gilmanton, New Hampshire. When you write an address in this area, the correct format is: Name, Street Address, Gilmanton, NH 03237.

ZIP Code 03237 County and State

ZIP code 03237 is located in Belknap, New Hampshire. For a complete list of cities and ZIP codes across the state, see the New Hampshire ZIP Codes page.

Nearby ZIP Codes in Belknap

These ZIP codes are in the same county as 03237:

ZIP Code 03237 on the Map

The map below shows the approximate center of ZIP code 03237, near Gilmanton, New Hampshire. You can zoom in and drag the map to explore the area.

Map center is approximate (ZIP area center, around 43.4175, -71.4121). Map data © OpenStreetMap.

Population and Demographics of ZIP Code 03237

According to public U.S. Census Bureau data, ZIP code 03237 is home to a community in New Hampshire. The figures below come from the U.S. Census and the American Community Survey (ACS).

Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.

Find an Address in ZIP Code 03237

Need the full ZIP+4 code for a specific street address in Gilmanton? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.

Frequently Asked Questions

Related ZIP Code Tools