Post Offices in Sioux Falls, South Dakota, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Meadows Postal Store Post Office No Reviews Favorite Phone: (605) 575-3565Retail Hours Sioux Falls Post Office No Reviews Favorite Fax: (605) 575-3553Phone: (605) 357-5011Retail Hours Sioux Falls Downtown Post Office No Reviews Favorite Fax: (605) 575-3553Phone: (605) 357-5011Retail Hours Southwest Carrier Annex Post Office No Reviews Favorite Phone: (605) 575-3584Retail Hours