ZIP Code 01003

01003 is one of Massachusetts's ZIP codes, delivering to addresses in Amherst, Hampshire County.

City: Amherst
County: Hampshire County
State: Massachusetts
Prefix: 010xx

Where this code sits

01003 is part of the 010xx range, the group of codes handled by one mail processing centre. Amherst is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Amherst page.

Amherst Massachusetts ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01003 delivers to without sharing its boundary.

413 Area code 413

ZIP codes nearest 01003

The ZIP codes whose reference points sit closest to 01003.
ZIP code	Distance	Delivers to
ZIP code 01004	0.8 mi	Amherst, MA
ZIP code 01059	1.3 mi	North Amherst, MA
ZIP code 01035	3.2 mi	Hadley, MA
ZIP code 01002	3.5 mi	Amherst, MA
ZIP code 01038	4.7 mi	Hatfield, MA
ZIP code 01375	4.8 mi	Sunderland, MA
ZIP code 01066	5.2 mi	North Hatfield, MA
ZIP code 01054	5.4 mi	Leverett, 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 01003, plotted from its record coordinates.

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

Scope ZIP code 01003. 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.