Waterloo Township is one of eighteen townships in Allamakee County, Iowa, USA. At the 2010 census, its population was 266. History Waterloo Township was organized in 1856. Geography Waterloo Township covers an area of and contains no incorporated settlements. It contains the unincorporated community of Dorchester. According to the USGS, it contains four cemeteries: Saint Johns, Saint Marys, Waterloo Ridge and West Waterloo Ridge. References External links US-Counties.com City-Data.com Townships in Allamakee County, Iowa Townships in Iowa 1856 establishments in Iowa Populated places established in 1856