what county is washington boro pa
Washington Boro, Pennsylvania. This article is about the community in Lancaster County, Pennsylvania. For other uses, see Washington, Pennsylvania (disambiguation). Washington Boro is a census-designated place (CDP) in Manor Township, Lancaster County, Pennsylvania, United States, along the Susquehanna River. The zip code here is 17582. It is served by the Penn Manor School District and is the terminus of both Pennsylvania Route 441 and Pennsylvania Route 999.