Catherine M Harstad (Postmaster)
catherine.m.harstad@usps.gov
200 3rd Ave N
Marietta, MN 56257
Marietta, MN 56257
The Marietta Post Office is located in the state of Minnesota within Lac Qui Parle County. This location serves 508 Marietta residents with a median income of $36,471. It's estimated that approximately 811 packages pass through this post office each year.