In which county is ZIP code 01366 located?

ZIP 01366 is listed under Worcester County, MA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 01366: Petersham, MA

ZIP: 01366

County: Worcester County

Coordinates: 42.48980, -72.18930

ZIP Type: Standard

Time Zone: Eastern Time (ET)

Get a reliable snapshot of the Petersham, MA postal area 01366. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Petersham
ZIP Code	01366
County	Worcester County
State	MA
Latitude / Longitude	42.48980, -72.18930
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 01366 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 01366 are listed as 42.48980 / -72.18930, useful for GPS and service checks in and around Petersham, MA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 01366 for mail delivery and general location reference in Worcester County, MA.

Some addresses near Petersham may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Petersham within MA.

Frequently Asked Questions

What is the primary city for ZIP code 01366?

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

In which county is 01366 located?

ZIP code 01366 is situated within Worcester County, MA.

What are the coordinates for 01366?

The approximate center point is 42.48980 (Latitude) and -72.18930 (Longitude).

Is ZIP code 01366 active?

This page lists ZIP 01366 as Listed based on the latest refresh date shown above.

Does ZIP 01366 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