City · Massachusetts · United States

Waltham, MA — ZIP codes

4 ZIP codes · Middlesex County

City: Waltham
County: Middlesex
State: Massachusetts
Country: United States
Postal codes: 02451024520245302454
Single source
Coordinates: 42.3986, -71.2451 View on OpenStreetMap

ZIP codes (4)

Postal code	Place name	Verification
02451	Waltham	Single source
02452	Waltham	Single source
02453	Waltham	Single source
02454	Waltham	Single source

Sources and verification

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Last generated : 2026-08-21. Report an error.