Post Offices in Appleton, Wisconsin, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Appleton Post Office No Reviews Favorite Fax: (920) 734-1506Phone: (920) 993-9442Retail Hours Grand Chute Post Office No Reviews Favorite Fax: (920) 734-1506Phone: (920) 735-4966Retail Hours