ZIP Code 03218

03218 is one of New Hampshire's ZIP codes, delivering to addresses in Barnstead, Belknap County.

City: Barnstead
County: Belknap County
State: New Hampshire
Prefix: 032xx

Where this code sits

03218 is part of the 032xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Barnstead.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03218 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03218

The ZIP codes whose reference points sit closest to 03218.
ZIP code	Distance	Delivers to
ZIP code 03225	2.8 mi	Center Barnstead, NH
ZIP code 03263	4.0 mi	Pittsfield, NH
ZIP code 03837	7.7 mi	Gilmanton Iron Works, NH
ZIP code 03237	8.4 mi	Gilmanton, NH
ZIP code 03884	8.6 mi	Strafford, NH
ZIP code 03234	8.8 mi	Epsom, NH
ZIP code 03258	8.8 mi	Chichester, NH
ZIP code 03307	9.0 mi	Loudon, 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 03218, plotted from its record coordinates.

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

Scope ZIP code 03218. 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.