ZIP Code 03285

03285 is one of New Hampshire's ZIP codes, delivering to addresses in Thornton, Grafton County.

City: Thornton
County: Grafton County
State: New Hampshire
Prefix: 032xx

Where this code sits

03285 is part of the 032xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Thornton.

Thornton New Hampshire ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03285 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03285

The ZIP codes whose reference points sit closest to 03285.
ZIP code	Distance	Delivers to
ZIP code 03223	4.5 mi	Campton, NH
ZIP code 03293	5.4 mi	Woodstock, NH
ZIP code 03215	8.0 mi	Waterville Valley, NH
ZIP code 03262	9.2 mi	North Woodstock, NH
ZIP code 03264	10 mi	Plymouth, NH
ZIP code 03251	11 mi	Lincoln, NH
ZIP code 03227	12 mi	Center Sandwich, NH
ZIP code 03245	12 mi	Holderness, 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 03285, plotted from its record coordinates.

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

Scope ZIP code 03285. 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.