ZIP Code 03456

03456 is one of New Hampshire's ZIP codes, delivering to addresses in Marlow, Cheshire County.

City: Marlow
County: Cheshire County
State: New Hampshire
Prefix: 034xx

Where this code sits

03456 is part of the 034xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Marlow.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03456 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03456

The ZIP codes whose reference points sit closest to 03456.
ZIP code	Distance	Delivers to
ZIP code 03607	5.2 mi	South Acworth, NH
ZIP code 03605	5.6 mi	Lempster, NH
ZIP code 03602	5.9 mi	Alstead, NH
ZIP code 03601	6.3 mi	Acworth, NH
ZIP code 03464	6.6 mi	Stoddard, NH
ZIP code 03280	7.1 mi	Washington, NH
ZIP code 03448	7.1 mi	Gilsum, NH
ZIP code 03604	9.1 mi	Drewsville, NH

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 03456, plotted from its record coordinates.

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

Scope ZIP code 03456. 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.