List of US Post Office Stores in Sisseton, SD Outlet Note Regular Brands US Post Office South Dakota Sisseton Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Sisseton Po Box 688 (605) 698-3756 US Post Office outlet - Sisseton 45672 Veterans Memorial Dr (605) 698-3413 US Post Office outlet - Sisseton 205 E Oak St, #103 (605) 698-7121 People Also Viewed