ZIP Code 02451
02451 is one of Massachusetts's ZIP codes, delivering to addresses in Waltham, Middlesex County.
- City
- Waltham
- County
- Middlesex County
- State
- Massachusetts
- Prefix
- 024xx
Where this code sits
02451 is part of the 024xx range, the group of codes handled by one mail processing centre. Waltham is served by 4 ZIP codes in total; the full list, with the county each falls in, is on the Waltham page.
Waltham Massachusetts ZIP codes →
Area codes over the same ground
Postal and telephone geography are drawn separately, so these codes cover the area 02451 delivers to without sharing its boundary.
ZIP codes nearest 02451
| ZIP code | Distance | Delivers to |
|---|---|---|
| ZIP code 02452 | 1.4 mi | Waltham, MA |
| ZIP code 02453 | 2.4 mi | Waltham, MA |
| ZIP code 02454 | 2.9 mi | Waltham, MA |
| ZIP code 02421 | 3.2 mi | Lexington, MA |
| ZIP code 02455 | 3.2 mi | North Waltham, MA |
| ZIP code 02479 | 3.3 mi | Waverley, MA |
| ZIP code 02495 | 3.3 mi | Nonantum, MA |
| ZIP code 02478 | 3.4 mi | Belmont, 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.
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope ZIP code 02451. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.