Grafton New Hampshire ZIP Codes

Grafton holds a single ZIP code.

Every ZIP code in Grafton

The complete list of Grafton, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03240	Grafton 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Grafton codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Grafton. 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 Grafton ZIP code begins 032. Those first three digits identify the sectional center facility that processes mail for this part of New Hampshire. Statewide that range covers 64 ZIP codes, so Grafton accounts for 2% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Grafton

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 Grafton occupies.

603 Area code 603

Grafton New Hampshire area codes in full →

Where Grafton's ZIP codes sit

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

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

Cities near Grafton

The closest places to Grafton with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Grantham New Hampshire ZIP codes	9.5 mi	1 ZIP code
Bristol New Hampshire ZIP codes	12 mi	1 ZIP code
Andover New Hampshire ZIP codes	13 mi	1 ZIP code
Sunapee New Hampshire ZIP codes	14 mi	1 ZIP code
Lebanon New Hampshire ZIP codes	15 mi	2 ZIP codes
Franklin New Hampshire ZIP codes	17 mi	1 ZIP code
Plymouth New Hampshire ZIP codes	17 mi	1 ZIP code
Newbury New Hampshire ZIP codes	18 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.