Sheila Gilbert (Postmaster)
sheila.b.gilbert@usps.gov
206 Market St
Mifflinville, PA 18631
Mifflinville, PA 18631
The Mifflinville Post Office is located in the state of Pennsylvania within Columbia County. This location serves 1,286 Mifflinville residents with a median income of $57,000. It's estimated that approximately 2,053 packages pass through this post office each year.