Kelli Perzichilli (Postmaster)
kelli.j.perzichilli@usps.gov
3373 Swan Valley Hwy
Irwin, ID 83428
Irwin, ID 83428
The Irwin Post Office is located in the state of Idaho within Bonneville County. This location serves 416 Irwin residents with a median income of $48,281. It's estimated that approximately 664 packages pass through this post office each year.