In which county is ZIP code 03810 located?

ZIP 03810 is listed under Belknap County, NH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 03810: Alton Bay, NH

ZIP: 03810

County: Belknap County

Coordinates: 43.48450, -71.24890

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 03810 in Alton Bay, NH. We include verified county details for Belknap County plus key geographic references used for mapping and logistics.

Primary City	Alton Bay
ZIP Code	03810
County	Belknap County
State	NH
Latitude / Longitude	43.48450, -71.24890
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 03810 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 03810 are listed as 43.48450 / -71.24890, useful for GPS and service checks in and around Alton Bay, NH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 03810 for mail delivery and general location reference in Belknap County, NH.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Alton Bay within NH.

Frequently Asked Questions

What is the primary city for ZIP code 03810?

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

In which county is 03810 located?

ZIP code 03810 is situated within Belknap County, NH.

What are the coordinates for 03810?

The approximate center point is 43.48450 (Latitude) and -71.24890 (Longitude).

Is ZIP code 03810 active?

This page lists ZIP 03810 as Listed based on the latest refresh date shown above.

Does ZIP 03810 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