ZIP Code 03874

03874 is one of New Hampshire's ZIP codes, delivering to addresses in Seabrook, Rockingham County.

City: Seabrook
County: Rockingham County
State: New Hampshire
Prefix: 038xx

Where this code sits

03874 is part of the 038xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Seabrook.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 03874 delivers to without sharing its boundary.

603 Area code 603

ZIP codes nearest 03874

The ZIP codes whose reference points sit closest to 03874.
ZIP code	Distance	Delivers to
ZIP code 01952	2.4 mi	Salisbury, MA
ZIP code 03844	3.1 mi	Hampton Falls, NH
ZIP code 03842	4.0 mi	Hampton, NH
ZIP code 01913	4.2 mi	Amesbury, MA
ZIP code 01950	5.1 mi	Newburyport, MA
ZIP code 03827	6.4 mi	East Kingston, NH
ZIP code 03862	6.7 mi	North Hampton, NH
ZIP code 01951	7.1 mi	Newbury, MA

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

Each point is the reference point for 03874, plotted from its record coordinates.

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

Scope ZIP code 03874. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.