Post Offices in Alpharetta, Georgia, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Alpharetta Post Office No Reviews Favorite Fax: (770) 751-8888Phone: (770) 442-3893Retail Hours Alpharetta Carrier Annex Post Office No Reviews Favorite Fax: (770) 521-2822Phone: (770) 521-2057Retail Hours Webb Bridge Post Office No Reviews Favorite Fax: (770) 752-1982Phone: (770) 569-9818Retail Hours