: Check all ZIP codes assigned to a specific city using the USPS City/State search . ZIP Code™ Lookup | USPS
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)
: A more populated area in Westmoreland County that includes North Huntingdon. 156642 zip
: Mammoth is a small community in Westmoreland County . Time Zone : Eastern Time Zone .
: Find a full 9-digit (ZIP+4) code by entering a street address on the official USPS website. : Check all ZIP codes assigned to a
To ensure you have the correct delivery information, you can use the following official tools:
: If you were searching for a different state, this code covers Limestone County, Texas. How to Verify a ZIP Code ZIP codes consist of five digits (like 15664)
: The area is primarily residential and rural. You can find more specific local business listings via tools like MapQuest. Similar ZIP Codes Nearby
