15642 is a valid ZIP Code for , and areas in Westmoreland County . However, 156421 is a 6-digit number and does not exist as a standard 5-digit United States ZIP Code.
If you are looking for information about the 5-digit ZIP Code , 15642 ZIP Code: Irwin, PA 156421 zip
Served by U.S. Route 30 and the Pennsylvania Turnpike (I-76), which has an exit in the area. 15642 is a valid ZIP Code for ,
A mix of historic borough residential areas and suburban developments. 15642 ZIP Code: Irwin
Approximately 33,000 residents as of recent census estimates.
Most students in this ZIP Code attend the Norwin School District . Demographics & Economy