Hahnaman Township is located in Whiteside County, Illinois. As of the 2010 census, its population was 399 and it contained 148 housing units. History Hahnaman Township was named for Samuel Hahnemann, founder of homeopathy. Geography According to the 2010 census, the township has a total area of , all land. Demographics References External links City-data.com Whiteside County Official Site Townships in Whiteside County, Illinois Townships in Illinois