In which county is ZIP code 03801 located?

ZIP 03801 is listed under Rockingham, NH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 03801: Portsmouth, NH

ZIP: 03801

County: Rockingham

Coordinates: 43.07290, -70.80520

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 03801, serving Portsmouth in NH. It lies in Rockingham and supports delivery, planning, and address verification.

Primary City	Portsmouth
ZIP Code	03801
County	Rockingham
State	NH
Latitude / Longitude	43.07290, -70.80520
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 03801 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 03801 is approximately 43.07290 (latitude) and -70.80520 (longitude). This location sits within Rockingham, contributing to regional planning across NH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 03801 for mail delivery and general location reference in Rockingham, NH.

Some addresses near Portsmouth may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Portsmouth within NH.

Frequently Asked Questions

What is the primary city for ZIP code 03801?

The primary city for this ZIP code is Portsmouth, located in NH.

In which county is 03801 located?

ZIP code 03801 is situated within Rockingham, NH.

What are the coordinates for 03801?

The approximate center point is 43.07290 (Latitude) and -70.80520 (Longitude).

Is ZIP code 03801 active?

This page lists ZIP 03801 as Listed based on the latest refresh date shown above.

Does ZIP 03801 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08