In which county is ZIP code 15661 located?

ZIP 15661 is listed under Westmoreland, PA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 15661: Loyalhanna, PA

ZIP: 15661

County: Westmoreland

Coordinates: 40.32220, -79.36010

ZIP Type: Standard

Time Zone: Eastern Time (ET)

This profile provides an in-depth look at ZIP code 15661, serving Loyalhanna in PA. It lies in Westmoreland and supports delivery, planning, and address verification.

Primary City	Loyalhanna
ZIP Code	15661
County	Westmoreland
State	PA
Latitude / Longitude	40.32220, -79.36010
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 15661 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 15661 are listed as 40.32220 / -79.36010, useful for GPS and service checks in and around Loyalhanna, PA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 15661 for mail delivery and general location reference in Westmoreland, PA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Loyalhanna within PA.

Frequently Asked Questions

What is the primary city for ZIP code 15661?

The primary city for this ZIP code is Loyalhanna, located in PA.

In which county is 15661 located?

ZIP code 15661 is situated within Westmoreland, PA.

What are the coordinates for 15661?

The approximate center point is 40.32220 (Latitude) and -79.36010 (Longitude).

Is ZIP code 15661 active?

This page lists ZIP 15661 as Listed based on the latest refresh date shown above.

Does ZIP 15661 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