Post Offices in Laredo, Texas, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Del Mar Post Office No Reviews Favorite Fax: (956) 723-8237Phone: (956) 723-6721Retail Hours El Centro Post Office No Reviews Favorite Fax: (956) 791-5948Phone: (956) 723-3643Retail Hours Laredo Post Office No Reviews Favorite Fax: (956) 723-1026Phone: (956) 723-2043Retail Hours