Claremont New Hampshire ZIP Codes

Claremont holds a single ZIP code.

Every ZIP code in Claremont

The complete list of Claremont, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03743	Sullivan 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Claremont codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Claremont. 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 Claremont ZIP code begins 037. Those first three digits identify the sectional center facility that processes mail for this part of New Hampshire. Statewide that range covers 29 ZIP codes, so Claremont accounts for 3% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Claremont

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 Claremont occupies.

603 Area code 603

Claremont New Hampshire area codes in full →

Where Claremont's ZIP codes sit

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

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

Cities near Claremont

The closest places to Claremont with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Newport New Hampshire ZIP codes	8.1 mi	1 ZIP code
Charlestown New Hampshire ZIP codes	11 mi	1 ZIP code
Sunapee New Hampshire ZIP codes	12 mi	1 ZIP code
Grantham New Hampshire ZIP codes	13 mi	1 ZIP code
Newbury New Hampshire ZIP codes	17 mi	1 ZIP code
Lebanon New Hampshire ZIP codes	18 mi	2 ZIP codes
Walpole New Hampshire ZIP codes	22 mi	1 ZIP code
Grafton New Hampshire ZIP codes	23 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.