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City ZIP codes · Massachusetts

Waltham, MA ZIP Codes

4 ZIP codes use the postal name Waltham, Massachusetts (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 3 residential and 1 for PO boxes or a single organization. Median household income runs from $115,366 in 02453 to $122,335 in 02451 (Census Bureau, ACS 2020-2024). Waltham's most populous ZIP code is 02453, with 31,591 people (ACS 2020-2024); 100% of its land is in the city of Waltham.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Waltham's ZIP codes?

02451: $122k median household income02452: $118k median household income02453: $115k median household income02453024510245202451: $122k median household income02452: $118k median household income02453: $115k median household income02453024510245202451: $122k median household income02452: $118k median household income02453: $115k median household income024530245102452
The 3 residential ZIP codes named Waltham, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Waltham's ZIP codes?

The highest median household income is in 02451 ($122,335), the lowest in 02453 ($115,366). Home values run from $705,100 in 02453 to $808,300 in 02452.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 3 residential ZIP codes of Waltham

Residential ZIP codes with the postal name Waltham, MA, largest first (ACS 2020-2024); sort by any column
County
02453 Middlesex County 31,591 8,795 $115k $705k
02451 Middlesex County 17,393 3,269 $122k $753k
02452 Middlesex County 15,808 4,146 $118k $808k

Download the 4 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Waltham

1 ZIP code named Waltham has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Waltham, MA: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
02454Middlesex County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Waltham's ZIP codes reach?

Waltham's residential ZIP codes lie in Middlesex County.

Which first three digits do Waltham's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Waltham starts with 024.

Three-digit prefixes of Waltham's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Waltham's
PrefixSectional centerHereAll codes
024 Boston, MA (SCF 021) 4 36

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.