ZIP Code 01604

01604 is one of Massachusetts's ZIP codes, delivering to addresses in Worcester, Worcester County.

City

Worcester

County

Worcester County

State

Massachusetts

Prefix

016xx

Where this code sits

01604 is part of the 016xx range, the group of codes handled by one mail processing centre. Worcester is served by 15 ZIP codes in total; the full list, with the county each falls in, is on the Worcester page.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 01604 delivers to without sharing its boundary.

ZIP codes nearest 01604

The ZIP codes whose reference points sit closest to 01604.
ZIP code	Distance	Delivers to
ZIP code 01608	1.4 mi	Worcester, MA
ZIP code 01601	1.5 mi	Worcester, MA
ZIP code 01614	1.5 mi	Worcester, MA
ZIP code 01615	1.5 mi	Worcester, MA
ZIP code 01610	1.9 mi	Worcester, MA
ZIP code 01607	1.9 mi	Worcester, MA
ZIP code 01605	2.5 mi	Worcester, MA
ZIP code 01613	3.0 mi	Worcester, 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 01604, plotted from its record coordinates.

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

Scope ZIP code 01604. 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.