ZIP Code 03242

03242 is one of New Hampshire's ZIP codes, delivering to addresses in Henniker, Merrimack County.

City: Henniker
County: Merrimack County
State: New Hampshire
Prefix: 032xx

Where this code sits

03242 is part of the 032xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Henniker.

Henniker New Hampshire ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03242 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03242

The ZIP codes whose reference points sit closest to 03242.
ZIP code	Distance	Delivers to
ZIP code 03229	6.1 mi	Contoocook, NH
ZIP code 03244	6.1 mi	Hillsborough, NH
ZIP code 03278	8.7 mi	Warner, NH
ZIP code 03221	8.9 mi	Bradford, NH
ZIP code 03281	9.3 mi	Weare, NH
ZIP code 03440	10 mi	Antrim, NH
ZIP code 03273	10 mi	South Sutton, NH
ZIP code 03303	11 mi	Concord, 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 03242, plotted from its record coordinates.

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

Scope ZIP code 03242. 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.