Swanzey New Hampshire ZIP Codes

Swanzey holds a single ZIP code.

Every ZIP code in Swanzey

The complete list of Swanzey, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03446	Cheshire 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Swanzey codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Swanzey. 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 Swanzey 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 Swanzey accounts for 4% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Swanzey

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 Swanzey occupies.

603 Area code 603

Swanzey New Hampshire area codes in full →

Where Swanzey's ZIP codes sit

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

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

Cities near Swanzey

The closest places to Swanzey with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Winchester New Hampshire ZIP codes	5.1 mi	1 ZIP code
Troy New Hampshire ZIP codes	7.5 mi	1 ZIP code
Keene New Hampshire ZIP codes	7.9 mi	2 ZIP codes
Hinsdale New Hampshire ZIP codes	8.7 mi	1 ZIP code
Dublin New Hampshire ZIP codes	15 mi	1 ZIP code
Rindge New Hampshire ZIP codes	17 mi	1 ZIP code
Walpole New Hampshire ZIP codes	17 mi	1 ZIP code
Antrim New Hampshire ZIP codes	24 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.