New Hampshire ZIP Codes

ZIP codes: 281
Cities & towns: 253
Counties: 10
Area codes: 1

How New Hampshire ZIP codes are numbered

030xx–038xx

The first three digits identify the sectional center facility that processes mail for a region, so a New Hampshire ZIP code can be placed geographically from its prefix alone. Each row names the city holding the most codes in that prefix.

New Hampshire three-digit ZIP prefixes, the codes in each, and the city that holds the most of them.
Prefix	ZIP codes	Main area
030xx	38	Nashua
031xx	10	Manchester
032xx	64	Tilton
033xx	6	Concord
034xx	28	Keene
035xx	21	Berlin
036xx	8	Acworth
037xx	29	Lebanon
038xx	77	Portsmouth

Where New Hampshire's communities sit

Each point is a New Hampshire community with a published ZIP code list, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

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

New Hampshire cities by ZIP code count

largest 25

Area codes serving New Hampshire

603 Manchester

Scope every ZIP code recorded in New Hampshire. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. The map outline is a convex envelope of published places, not a state boundary.