Dayton Township is a township in Iowa County, Iowa, USA. History Dayton Township was established in 1857.[1] References [1]The History of Iowa County, Iowa: Containing a History of the County, Its Cities, Towns, &c. Union Historical Company. 1881. pp. 373. 41.5617°N 92.2469°W / 41.5617; -92.2469 This article about the geography of Iowa County, Iowa is a stub. You can help Wikipedia by expanding it.vteWikiwand - on Seamless Wikipedia browsing. On steroids.