Post Offices in Fairmont, West Virginia, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List East Side Post Office No Reviews Favorite Phone: (304) 366-2636Retail Hours Fairmont Post Office No Reviews Favorite Fax: (304) 368-0316Phone: (304) 366-1610Retail Hours