Post Offices in South Salem, New York, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List South Salem Post Office No Reviews Favorite Fax: (914) 763-6138Phone: (914) 763-3957Retail Hours South Salem Annex Post Office No Reviews Favorite Phone: (914) 533-6182Retail Hours