Post Offices in Belmont, Massachusetts, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Belmont Post Office No Reviews Favorite Fax: (617) 489-9488Phone: (617) 484-4201Retail Hours Waverley Post Office No Reviews Favorite Phone: (617) 484-4724Retail Hours