Washington Township, Clinton County, IowaWashington Township is a township in Clinton County, Iowa, United States. As of the 2000 census, its population was 460.HistoryWashington Township was organized in 1856. It is named for George Washington.GeographyWashington Township covers an area of and contains no incorporated settlements. According to the USGS, it contains four cemeteries: Clinton County Farm, Rossiter, Saint Patricks and White.