Union Township, Calhoun County, IowaUnion Township is one of sixteen townships in Calhoun County, Iowa, United States. As of the 2000 census, its population was 573.HistoryUnion Township was created in 1878.GeographyUnion Township covers an area of and contains one incorporated settlement, Lohrville. According to the USGS, it contains two cemeteries: Evergreen and Evergreen.