Post Offices in Valparaiso, Indiana, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Downtown Valparaiso Post Office No Reviews Favorite Phone: (219) 464-1637Retail Hours Valparaiso Post Office No Reviews Favorite Fax: (219) 531-5435Phone: (219) 462-2180Retail Hours