Sunapee New Hampshire ZIP Codes

Sunapee holds a single ZIP code.

Every ZIP code in Sunapee

The complete list of Sunapee, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03782	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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Sunapee codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Sunapee. 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 Sunapee 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 Sunapee accounts for 3% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Sunapee

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 Sunapee occupies.

603 Area code 603

Sunapee New Hampshire area codes in full →

Where Sunapee's ZIP codes sit

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

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

Cities near Sunapee

The closest places to Sunapee with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Newport New Hampshire ZIP codes	4.4 mi	1 ZIP code
Newbury New Hampshire ZIP codes	6.1 mi	1 ZIP code
Grantham New Hampshire ZIP codes	8.7 mi	1 ZIP code
Claremont New Hampshire ZIP codes	12 mi	1 ZIP code
Grafton New Hampshire ZIP codes	14 mi	1 ZIP code
Warner New Hampshire ZIP codes	15 mi	1 ZIP code
Andover New Hampshire ZIP codes	16 mi	1 ZIP code
Lebanon New Hampshire ZIP codes	19 mi	2 ZIP codes

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