ZIP Code 01226

01226 is one of Massachusetts's ZIP codes, delivering to addresses in Dalton, Berkshire County.

City: Dalton
County: Berkshire County
State: Massachusetts
Prefix: 012xx

Where this code sits

01226 is part of the 012xx range, the group of codes handled by one mail processing centre. Dalton is served by 2 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01226 delivers to without sharing its boundary.

413 Area code 413

ZIP codes nearest 01226

The ZIP codes whose reference points sit closest to 01226.
ZIP code	Distance	Delivers to
ZIP code 01227	0.3 mi	Dalton, MA
ZIP code 01224	3.1 mi	Berkshire, MA
ZIP code 01237	4.5 mi	Lanesborough, MA
ZIP code 01201	4.7 mi	Pittsfield, MA
ZIP code 01235	5.5 mi	Hinsdale, MA
ZIP code 01225	6.0 mi	Cheshire, MA
ZIP code 01202	6.7 mi	Pittsfield, MA
ZIP code 01203	6.7 mi	Pittsfield, 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 01226, plotted from its record coordinates.

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

Scope ZIP code 01226. 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.