Post Offices in Eau Claire, Wisconsin, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Eau Claire Post Office No Reviews Favorite Fax: (715) 830-5752Phone: (715) 833-6785Retail Hours Eau Claire 2 Post Office No Reviews Favorite Fax: (715) 839-0233Phone: (715) 833-6785Retail Hours Eau Claire Carrier Annex Post Office No Reviews Favorite Fax: (715) 839-0233Phone: (715) 833-6785Retail Hours