A mix of historic borough residential areas and suburban developments.
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The 15642 ZIP Code serves Irwin, North Huntingdon, and portions of Penn Township in Pennsylvania. It is located approximately 20 miles southeast of Pittsburgh. Community & Infrastructure Irwin County: Westmoreland County A mix of historic borough residential areas and
Served by U.S. Route 30 and the Pennsylvania Turnpike (I-76), which has an exit in the area. 156421 zip
Approximately 33,000 residents as of recent census estimates.
: A full 9-digit code like 15642-1XXX , where the "1" is the start of the four-digit extension used for more precise mail sorting.