Quincy Township is one of twelve townships in Adams County, Iowa, United States. At the 2010 census, its population was 1779. Quincy Township covers an area of 35.34 square miles and contains one incorporated settlement, Corning. According to the USGS, it contains five cemeteries: Oakland, Old Queen City, Queen City, Quincy and Waln…Quincy Township is one of twelve townships in Adams County, Iowa, United States. At the 2010 census, its population was 1779. Quincy Township covers an area of 35.34 square miles and contains one incorporated settlement, Corning. According to the USGS, it contains five cemeteries: Oakland, Old Queen City, Queen City, Quincy and Walnut Grove.