In which county is ZIP code 03821 located?

ZIP 03821 is listed under Strafford County, NH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 03821: Dover, NH

ZIP: 03821

County: Strafford County

Coordinates: 43.19790, -70.87370

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 03821, serving Dover in NH. It lies in Strafford County and supports delivery, planning, and address verification.

Primary City	Dover
ZIP Code	03821
County	Strafford County
State	NH
Latitude / Longitude	43.19790, -70.87370
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 03821 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 03821 are listed as 43.19790 / -70.87370, useful for GPS and service checks in and around Dover, NH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 03821 for mail delivery and general location reference in Strafford County, NH.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Dover.

Related ZIP Codes (Nearby)

Explore other postal codes near Dover within NH.

Frequently Asked Questions

What is the primary city for ZIP code 03821?

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

In which county is 03821 located?

ZIP code 03821 is situated within Strafford County, NH.

What are the coordinates for 03821?

The approximate center point is 43.19790 (Latitude) and -70.87370 (Longitude).

Is ZIP code 03821 active?

This page lists ZIP 03821 as Listed based on the latest refresh date shown above.

Does ZIP 03821 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