Union Township is one of seventeen townships in Adair County, Iowa, USA. At the 2010 census, its population was 177. History Union Township was first settled in 1853. Geography Union Township covers an area of and contains no incorporated settlements. According to the USGS, it contains three cemeteries: Hill of Zion, Liberty and Wilson. References External links US-Counties.com City-Data.com Townships in Adair County, Iowa Townships in Iowa 1853 establishments in Iowa Populated places established in 1853