Milton New Hampshire ZIP Codes

Milton holds a single ZIP code.

Every ZIP code in Milton

The complete list of Milton, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03851	Strafford 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Milton codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Milton. 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 Milton 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 Milton accounts for 1% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Milton

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 Milton occupies.

603 Area code 603

Milton New Hampshire area codes in full →

Where Milton's ZIP codes sit

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

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

Cities near Milton

The closest places to Milton with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Rochester New Hampshire ZIP codes	7.3 mi	4 ZIP codes
Somersworth New Hampshire ZIP codes	12 mi	1 ZIP code
Alton New Hampshire ZIP codes	12 mi	1 ZIP code
Strafford New Hampshire ZIP codes	14 mi	1 ZIP code
Dover New Hampshire ZIP codes	16 mi	3 ZIP codes
Madbury New Hampshire ZIP codes	16 mi	1 ZIP code
Northwood New Hampshire ZIP codes	17 mi	1 ZIP code
Wolfeboro New Hampshire ZIP codes	17 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.