Greenfield Township is one of seventeen townships in Adair County, Iowa, USA. At the 2010 census, its population was 2,072. History Greenfield Township was first settled in 1854. This township was organized in 1859. Geography Greenfield Township covers an area of and contains one incorporated settlement, Greenfield. According to the USGS, it contains one cemetery, Greenfield. References External links US-Counties.com City-Data.com Townships in Adair County, Iowa Townships in Iowa 1854 establishments in Iowa