In which county is ZIP code 02121 located?

ZIP 02121 is listed under Suffolk County, MA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 02121: Boston, MA

ZIP: 02121

County: Suffolk County

Coordinates: 42.30710, -71.08160

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 02121, serving Boston in MA. It lies in Suffolk County and supports delivery, planning, and address verification.

Primary City	Boston
ZIP Code	02121
County	Suffolk County
State	MA
Latitude / Longitude	42.30710, -71.08160
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 02121 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 02121 is commonly represented around 42.30710, -71.08160. These coordinates help identify the general area within Suffolk County, MA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 02121 for mail delivery and general location reference in Suffolk County, MA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Boston within MA.

Frequently Asked Questions

What is the primary city for ZIP code 02121?

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

In which county is 02121 located?

ZIP code 02121 is situated within Suffolk County, MA.

What are the coordinates for 02121?

The approximate center point is 42.30710 (Latitude) and -71.08160 (Longitude).

Is ZIP code 02121 active?

This page lists ZIP 02121 as Listed based on the latest refresh date shown above.

Does ZIP 02121 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