ZIP Code 03589

03589 is one of New Hampshire's ZIP codes, delivering to addresses in Mount Washington, Coos County.

City: Mount Washington
County: Coos County
State: New Hampshire
Prefix: 035xx

Where this code sits

03589 is part of the 035xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mount Washington.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03589 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03589

The ZIP codes whose reference points sit closest to 03589.
ZIP code	Distance	Delivers to
ZIP code 03597	0.0 mi	West Stewartstown, NH
ZIP code 03590	8.8 mi	North Stratford, NH
ZIP code 03582	8.9 mi	Groveton, NH
ZIP code 05905	10 mi	Guildhall, VT
ZIP code 03588	13 mi	Milan, NH
ZIP code 03579	14 mi	Errol, NH
ZIP code 03576	15 mi	Colebrook, NH
ZIP code 05840	16 mi	Granby, VT

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 03589, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 03589. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.