Photo from Digital-Topo-Maps.com | Port Washington, WI 53074 Post Office Location: 104 E Main St; Port Washington, WI Year Post Office built: Town(s) Served: Port Washington Acceptable City Names: Port Washington, Prt Washington Not Acceptable City Names: Sectional Service Facility: Milwaukee (North) County(ies): Ozaukee Info on Port Washington: Port Washington is located in East-Central Ozaukee County. It sits along the western shore of Lake Michigan and is the county seat of Ozaukee County. The town was formed in 1846. |