William E Whaley (Postmaster)
william.e.whaley@usps.gov
7337 National Pike
Addison, PA 15411
Addison, PA 15411
The Addison Post Office is located in the state of Pennsylvania within Somerset County. This location serves 661 Addison residents with a median income of $49,000. It's estimated that approximately 1,055 packages pass through this post office each year.