Jefferson Township is one of seventeen townships in Adair County, Iowa, USA. At the 2020 census, its population was 130. History Jefferson Township was organized in 1855. Geography Jefferson Township covers an area of and contains no incorporated settlements. According to the USGS, it contains two cemeteries: Jefferson and Loucks Grove. References External links US-Counties.com City-Data.com Townships in Adair County, Iowa Townships in Iowa 1855 establishments in Iowa Populated places established in 1855