Antrim New Hampshire ZIP Codes

Antrim holds a single ZIP code.

Every ZIP code in Antrim

The complete list of Antrim, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03440	Hillsborough County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Antrim codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Antrim. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Antrim ZIP code begins 034. Those first three digits identify the sectional center facility that processes mail for this part of New Hampshire. Statewide that range covers 28 ZIP codes, so Antrim accounts for 4% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Antrim

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Antrim occupies.

603 Area code 603

Antrim New Hampshire area codes in full →

Where Antrim's ZIP codes sit

Each point is one Antrim ZIP code, plotted from its record coordinates.

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

Cities near Antrim

The closest places to Antrim with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Hillsborough New Hampshire ZIP codes	5.7 mi	1 ZIP code
Dublin New Hampshire ZIP codes	11 mi	1 ZIP code
Henniker New Hampshire ZIP codes	12 mi	1 ZIP code
Wilton New Hampshire ZIP codes	17 mi	1 ZIP code
Warner New Hampshire ZIP codes	18 mi	1 ZIP code
Goffstown New Hampshire ZIP codes	18 mi	1 ZIP code
Keene New Hampshire ZIP codes	19 mi	2 ZIP codes
Troy New Hampshire ZIP codes	19 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.