ZIP Code 01831

01831 is one of Massachusetts's ZIP codes, delivering to addresses in Haverhill, Essex County.

City: Haverhill
County: Essex County
State: Massachusetts
Prefix: 018xx

Where this code sits

01831 is part of the 018xx range, the group of codes handled by one mail processing centre. Haverhill is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Haverhill page.

Haverhill Massachusetts ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01831 delivers to without sharing its boundary.

ZIP codes nearest 01831

The ZIP codes whose reference points sit closest to 01831.
ZIP code	Distance	Delivers to
ZIP code 01832	0.8 mi	Haverhill, MA
ZIP code 01835	2.3 mi	Haverhill, MA
ZIP code 01830	2.7 mi	Haverhill, MA
ZIP code 01844	4.2 mi	Methuen, MA
ZIP code 03865	4.7 mi	Plaistow, NH
ZIP code 01841	4.7 mi	Lawrence, MA
ZIP code 01840	4.8 mi	Lawrence, MA
ZIP code 01842	4.9 mi	Lawrence, 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 01831, plotted from its record coordinates.

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

Scope ZIP code 01831. 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.