ZIP Code 03584

03584 is one of New Hampshire's ZIP codes, delivering to addresses in Lancaster, Coos County.

City: Lancaster
County: Coos County
State: New Hampshire
Prefix: 035xx

Where this code sits

03584 is part of the 035xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Lancaster.

Lancaster New Hampshire ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03584 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03584

The ZIP codes whose reference points sit closest to 03584.
ZIP code	Distance	Delivers to
ZIP code 05906	6.8 mi	Lunenburg, VT
ZIP code 03582	7.8 mi	Groveton, NH
ZIP code 03583	8.3 mi	Jefferson, NH
ZIP code 03598	8.8 mi	Whitefield, NH
ZIP code 05904	9.5 mi	Gilman, VT
ZIP code 05858	12 mi	North Concord, VT
ZIP code 05905	14 mi	Guildhall, VT
ZIP code 05840	15 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 03584, plotted from its record coordinates.

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

Scope ZIP code 03584. 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.