Dianne K Zafft (Postmaster)
dianne.k.zafft@usps.gov
205 E Oak St Ste 103
Sisseton, SD 57262
Sisseton, SD 57262
The Sisseton Post Office is located in the state of South Dakota within Roberts County. This location serves 4,963 Sisseton residents with a median income of $37,256. It's estimated that approximately 7,922 packages pass through this post office each year.