Karen Sunstrom (Postmaster)
karen.b.sunstrom@usps.gov
10685 N Bay Shore Dr
Sister Bay, WI 54234
Sister Bay, WI 54234
The Sister Bay Post Office is located in the state of Wisconsin within Door County. This location serves 1,614 Sister Bay residents with a median income of $45,781. It's estimated that approximately 2,576 packages pass through this post office each year.