Lancaster New Hampshire ZIP Codes

Lancaster holds a single ZIP code.

Every ZIP code in Lancaster

The complete list of Lancaster, New Hampshire ZIP codes with the county each falls in.
ZIP code	County
03584	Coos 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Lancaster codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Lancaster. 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 Lancaster ZIP code begins 035. Those first three digits identify the sectional center facility that processes mail for this part of New Hampshire. Statewide that range covers 21 ZIP codes, so Lancaster accounts for 5% of it.

Every New Hampshire ZIP prefix and the region it covers →

Area codes covering Lancaster

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 Lancaster occupies.

603 Area code 603

Lancaster New Hampshire area codes in full →

Where Lancaster's ZIP codes sit

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

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

Cities near Lancaster

The closest places to Lancaster with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Whitefield New Hampshire ZIP codes	8.3 mi	1 ZIP code
Jefferson New Hampshire ZIP codes	8.6 mi	1 ZIP code
Littleton New Hampshire ZIP codes	15 mi	1 ZIP code
Berlin New Hampshire ZIP codes	15 mi	1 ZIP code
Bethlehem New Hampshire ZIP codes	16 mi	1 ZIP code
Gorham New Hampshire ZIP codes	20 mi	1 ZIP code
Franconia New Hampshire ZIP codes	22 mi	1 ZIP code
Colebrook New Hampshire ZIP codes	28 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.