ZIP Code 03443

03443 is one of New Hampshire's ZIP codes, delivering to addresses in Chesterfield, Cheshire County.

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

Where this code sits

03443 is part of the 034xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Chesterfield.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03443 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03443

The ZIP codes whose reference points sit closest to 03443.
ZIP code	Distance	Delivers to
ZIP code 03466	2.9 mi	West Chesterfield, NH
ZIP code 03462	3.0 mi	Spofford, NH
ZIP code 05302	5.7 mi	Brattleboro, VT
ZIP code 05303	5.7 mi	Brattleboro, VT
ZIP code 05304	5.7 mi	Brattleboro, VT
ZIP code 03467	6.0 mi	Westmoreland, NH
ZIP code 03451	6.1 mi	Hinsdale, NH
ZIP code 03441	6.9 mi	Ashuelot, 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 03443, plotted from its record coordinates.

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

Scope ZIP code 03443. 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.