Texas Newport Township is a township in Johnson County, Iowa, USA.[1] History Newport Township was organized in 1846.[2] References ^ U.S. Geological Survey Geographic Names Information System: Newport Township, Johnson County, Iowa ^ History of Johnson County, Iowa, Containing a History of the County, and Its Townships, Cities and Villages from 1836 to 1882. 1883. p. 185. Municipalities and communities of Johnson County, Iowa, United StatesCounty seat: Iowa CityCities Coralville Hills Iowa City Lone Tree North Liberty Oxford Shueyville Solon Swisher Tiffin University Heights West Branch‡ Map of Iowa highlighting Johnson CountyTownships Big Grove Cedar Clear Creek East Lucas Fremont Graham Hardin Jefferson Liberty Lincoln Madison Monroe Newport Oxford Penn Pleasant Valley Scott Sharon Union Washington CDP Frytown Otherunincorporatedcommunities Amish Cosgrove Morse Oakdale Oasis River Junction Sharon Center Sutliff Windham Ghost town Midway Footnotes‡This populated place also has portions in an adjacent county or counties Iowa portal United States portal 41°43′44″N 91°30′34″W / 41.7289°N 91.5094°W / 41.7289; -91.5094