Post Offices in Jamestown, New York, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Jamestown Post Office No Reviews Favorite Fax: (716) 483-2576Phone: (716) 664-2133Retail Hours Southside Post Office No Reviews Favorite Phone: (716) 484-1562Retail Hours