In which county is ZIP code 03803 located?

ZIP 03803 is listed under Rockingham, NH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 03803: Portsmouth, NH

ZIP: 03803

County: Rockingham

Coordinates: 43.07180, -70.76260

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 03803 in Portsmouth, NH. We include verified county details for Rockingham plus key geographic references used for mapping and logistics.

Primary City	Portsmouth
ZIP Code	03803
County	Rockingham
State	NH
Latitude / Longitude	43.07180, -70.76260
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 03803 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 03803 is commonly represented around 43.07180, -70.76260. These coordinates help identify the general area within Rockingham, NH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 03803 for mail delivery and general location reference in Rockingham, NH.

This ZIP may extend beyond the city core into nearby communities within Rockingham.

Related ZIP Codes (Nearby)

Explore other postal codes near Portsmouth within NH.

Frequently Asked Questions

What is the primary city for ZIP code 03803?

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

In which county is 03803 located?

ZIP code 03803 is situated within Rockingham, NH.

What are the coordinates for 03803?

The approximate center point is 43.07180 (Latitude) and -70.76260 (Longitude).

Is ZIP code 03803 active?

This page lists ZIP 03803 as Listed based on the latest refresh date shown above.

Does ZIP 03803 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