In which county is ZIP code 02139 located?

ZIP 02139 is listed under Middlesex County, MA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 02139: Cambridge, MA

ZIP: 02139

County: Middlesex County

Coordinates: 42.36470, -71.10420

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Cambridge, MA postal area 02139. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Cambridge
ZIP Code	02139
County	Middlesex County
State	MA
Latitude / Longitude	42.36470, -71.10420
ZIP Type	Standard
Time Zone	Eastern Time (ET)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 02139 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 02139 is commonly represented around 42.36470, -71.10420. These coordinates help identify the general area within Middlesex County, MA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 02139 for mail delivery and general location reference in Middlesex County, MA.

This ZIP may extend beyond the city core into nearby communities within Middlesex County.

Related ZIP Codes (Nearby)

Explore other postal codes near Cambridge within MA.

Frequently Asked Questions

What is the primary city for ZIP code 02139?

The primary city for this ZIP code is Cambridge, located in MA.

In which county is 02139 located?

ZIP code 02139 is situated within Middlesex County, MA.

What are the coordinates for 02139?

The approximate center point is 42.36470 (Latitude) and -71.10420 (Longitude).

Is ZIP code 02139 active?

This page lists ZIP 02139 as Listed based on the latest refresh date shown above.

Does ZIP 02139 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08