In which county is ZIP code 03589 located?

ZIP 03589 is listed under Coos County, NH.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 03589: Mount Washington, NH

ZIP: 03589

County: Coos County

Coordinates: 44.69560, -71.38740

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Explore detailed information for ZIP code 03589 in Mount Washington, NH. We include verified county details for Coos County plus key geographic references used for mapping and logistics.

Primary City	Mount Washington
ZIP Code	03589
County	Coos County
State	NH
Latitude / Longitude	44.69560, -71.38740
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 03589 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 03589 are listed as 44.69560 / -71.38740, useful for GPS and service checks in and around Mount Washington, NH.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 03589 for mail delivery and general location reference in Coos County, NH.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Mount Washington within NH.

Frequently Asked Questions

What is the primary city for ZIP code 03589?

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

In which county is 03589 located?

ZIP code 03589 is situated within Coos County, NH.

What are the coordinates for 03589?

The approximate center point is 44.69560 (Latitude) and -71.38740 (Longitude).

Is ZIP code 03589 active?

This page lists ZIP 03589 as Listed based on the latest refresh date shown above.

Does ZIP 03589 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