Delaware Township, Delaware County, Iowa  Delaware Township is a township in Delaware County, Iowa, USA. As of the 2000 census, its population was 6,294. Delaware Township covers an area of 36.64 square miles (94.89 square kilometers); of this, 0.19 square miles (0.5 square kilometers) or 0.53 percent is water. The streams of Coffins Creek, Honey Creek, Lindsey Creek and Rieger Creek run through this township. (This list is based on USGS data and may include former settlements.) The township contains four cemeteries: Mead, Oakland, Rock Prairie and Saint Marys.