ZIP Code 02129

02129 is one of Massachusetts's ZIP codes, delivering to addresses in Charlestown, Suffolk County.

City: Charlestown
County: Suffolk County
State: Massachusetts
Prefix: 021xx

Where this code sits

02129 is part of the 021xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Charlestown.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 02129 delivers to without sharing its boundary.

ZIP codes nearest 02129

The ZIP codes whose reference points sit closest to 02129.
ZIP code	Distance	Delivers to
ZIP code 02113	0.9 mi	Boston, MA
ZIP code 02222	0.9 mi	Boston, MA
ZIP code 02203	1.1 mi	Boston, MA
ZIP code 02114	1.2 mi	Boston, MA
ZIP code 02141	1.2 mi	Cambridge, MA
ZIP code 02109	1.3 mi	Boston, MA
ZIP code 02212	1.3 mi	Boston, MA
ZIP code 02112	1.3 mi	Boston, 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 02129, plotted from its record coordinates.

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

Scope ZIP code 02129. 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.