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Deborah A Wittmayer (Postmaster)
deborah.a.wittmayer@usps.gov
402 S Monroe St
Winner, SD 57580
Winner, SD 57580
The Winner Post Office is located in the state of South Dakota within Tripp County. This location serves 4,449 Winner residents with a median income of $39,888. It's estimated that approximately 7,101 packages pass through this post office each year.