Post Offices in Port Saint Lucie, Florida, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Port Saint Lucie Post Office No Reviews Favorite Fax: (772) 344-5056Phone: (772) 873-0674Retail Hours Port Saint Lucie Midport Post Office No Reviews Favorite Fax: (772) 398-1537Phone: (772) 337-7504Retail Hours