Newton New Hampshire ZIP Codes

Newton holds a single ZIP code.

Every ZIP code in Newton

The complete list of Newton, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03858	Rockingham 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Newton codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Newton. 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 Newton ZIP code begins 038. Those first three digits identify the sectional center facility that processes mail for this part of New Hampshire. Statewide that range covers 77 ZIP codes, so Newton accounts for 1% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Newton

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 Newton occupies.

603 Area code 603

Newton New Hampshire area codes in full →

Where Newton's ZIP codes sit

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

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

Cities near Newton

The closest places to Newton with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Kingston New Hampshire ZIP codes	3.3 mi	1 ZIP code
Danville New Hampshire ZIP codes	5.5 mi	1 ZIP code
Atkinson New Hampshire ZIP codes	6.4 mi	1 ZIP code
Hampstead New Hampshire ZIP codes	6.8 mi	1 ZIP code
Fremont New Hampshire ZIP codes	9.0 mi	1 ZIP code
Salem New Hampshire ZIP codes	11 mi	1 ZIP code
Epping New Hampshire ZIP codes	12 mi	1 ZIP code
Hampton New Hampshire ZIP codes	12 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.