ZIP Code 02478

02478 is one of Massachusetts's ZIP codes, delivering to addresses in Belmont, Middlesex County.

City: Belmont
County: Middlesex County
State: Massachusetts
Prefix: 024xx

Where this code sits

02478 is part of the 024xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Belmont.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 02478 delivers to without sharing its boundary.

ZIP codes nearest 02478

The ZIP codes whose reference points sit closest to 02478.
ZIP code	Distance	Delivers to
ZIP code 02479	0.6 mi	Waverley, MA
ZIP code 02476	1.4 mi	Arlington, MA
ZIP code 02475	1.7 mi	Arlington Heights, MA
ZIP code 02471	1.7 mi	Watertown, MA
ZIP code 02477	1.7 mi	Watertown, MA
ZIP code 02472	1.8 mi	Watertown, MA
ZIP code 02452	2.0 mi	Waltham, MA
ZIP code 02474	2.0 mi	Arlington, 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 02478, plotted from its record coordinates.

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

Scope ZIP code 02478. 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.