Texas Township in Iowa, USA Sheridan Township is a township in Poweshiek County, Iowa, USA.[1] References ^ U.S. Geological Survey Geographic Names Information System: Sheridan Township, Poweshiek County, Iowa Municipalities and communities of Poweshiek County, Iowa, United StatesCounty seat: MontezumaCities Barnes City Brooklyn Deep River Grinnell Guernsey Hartwick Malcom Montezuma Victor‡ Map of Iowa highlighting Poweshiek CountyCDP Holiday Lake Unincorporatedcommunities Carnforth Searsboro Tilton‡ Ghost towns Jacobs Footnotes‡This populated place also has portions in an adjacent county or counties Iowa portal United States portal 41°49′N 92°35′W / 41.817°N 92.583°W / 41.817; -92.583