List of US Post Office Stores in Platte, SD Outlet Note Regular Brands US Post Office South Dakota Platte Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Platte 121 Main St (605) 964-6633 US Post Office outlet - Platte 1 Main St (605) 823-4387 US Post Office outlet - Platte 20 E 5th St (605) 337-3491 People Also Viewed