Post Offices in Merrifield, Virginia, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Engineering Retail Test Post Office No Reviews Favorite Phone: (703) 280-7417Retail Hours Merrifield Post Office No Reviews Favorite Fax: (703) 204-3040Phone: (703) 698-6356Retail Hours