Post Offices in Federal Way, Washington, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Federal Way Post Office No Reviews Favorite Fax: (651) 456-6174Phone: (253) 927-8101Retail Hours Twin Lakes Auburn Post Office No Reviews Favorite Fax: (651) 456-6278Phone: (253) 952-4563Retail Hours