Home / New Hampshire ZIP Codes / ZIP Code 03801

ZIP code 03801 belongs to Portsmouth, New Hampshire, in Rockingham. If you are mailing a letter or package to this area, use Portsmouth, NH 03801 in the address. On this page you will find the city and county for 03801, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.

What City Is ZIP Code 03801?

The city for ZIP code 03801 is Portsmouth, New Hampshire. When you write an address in this area, the correct format is: Name, Street Address, Portsmouth, NH 03801.

ZIP Code 03801 County and State

ZIP code 03801 is located in Rockingham, 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 Rockingham

These ZIP codes are in the same county as 03801:

ZIP Code 03801 on the Map

The map below shows the approximate center of ZIP code 03801, near Portsmouth, New Hampshire. You can zoom in and drag the map to explore the area.

Map center is approximate (ZIP area center, around 43.0729, -70.8052). Map data © OpenStreetMap.

Population and Demographics of ZIP Code 03801

According to public U.S. Census Bureau data, ZIP code 03801 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 03801

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

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