ZIP Code 02645

02645 is one of Massachusetts's ZIP codes, delivering to addresses in Harwich, Barnstable County.

City: Harwich
County: Barnstable County
State: Massachusetts
Prefix: 026xx

Where this code sits

02645 is part of the 026xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Harwich.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 02645 delivers to without sharing its boundary.

ZIP codes nearest 02645

The ZIP codes whose reference points sit closest to 02645.
ZIP code	Distance	Delivers to
ZIP code 02661	1.6 mi	South Harwich, MA
ZIP code 02646	2.2 mi	Harwich Port, MA
ZIP code 02659	2.3 mi	South Chatham, MA
ZIP code 02631	3.4 mi	Brewster, MA
ZIP code 02671	3.6 mi	West Harwich, MA
ZIP code 02669	3.7 mi	West Chatham, MA
ZIP code 02633	4.5 mi	Chatham, MA
ZIP code 02639	4.6 mi	Dennis Port, 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 02645, plotted from its record coordinates.

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

Scope ZIP code 02645. 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.