ZIP Code 03070

03070 is one of New Hampshire's ZIP codes, delivering to addresses in New Boston, Hillsborough County.

City: New Boston
County: Hillsborough County
State: New Hampshire
Prefix: 030xx

Where this code sits

03070 is part of the 030xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to New Boston.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03070 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03070

The ZIP codes whose reference points sit closest to 03070.
ZIP code	Distance	Delivers to
ZIP code 03057	5.2 mi	Mont Vernon, NH
ZIP code 03043	6.5 mi	Francestown, NH
ZIP code 03045	6.8 mi	Goffstown, NH
ZIP code 03281	6.9 mi	Weare, NH
ZIP code 03082	6.9 mi	Lyndeborough, NH
ZIP code 03110	8.6 mi	Bedford, NH
ZIP code 03031	8.9 mi	Amherst, NH
ZIP code 03047	9.6 mi	Greenfield, 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 03070, plotted from its record coordinates.

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

Scope ZIP code 03070. 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.