156642 Zip Apr 2026

: If you were searching for a different state, this code covers Limestone County, Texas. How to Verify a ZIP Code

The ZIP code primarily serves Mammoth, Pennsylvania , located in Westmoreland County. While the specific string "156642" may appear in some contexts, standard U.S. ZIP codes consist of five digits (like 15664). If you are looking for a six-digit code, it is likely a 5-digit ZIP followed by a single digit, or a typo for nearby codes like 15642 (Irwin, PA). Key Details for ZIP 15664 (Mammoth, PA)

: Check all ZIP codes assigned to a specific city using the USPS City/State search . ZIP Code™ Lookup | USPS 156642 zip

: The area is primarily residential and rural. You can find more specific local business listings via tools like MapQuest. Similar ZIP Codes Nearby

If 15664 is not the location you intended, these similar codes are in the same region: : If you were searching for a different

: A more populated area in Westmoreland County that includes North Huntingdon.

To ensure you have the correct delivery information, you can use the following official tools: ZIP codes consist of five digits (like 15664)

: Find a full 9-digit (ZIP+4) code by entering a street address on the official USPS website.