Jefferson County, Iowa

county in Iowa, United States

Jefferson County is a county in the U.S. state of Iowa. As of the 2010 census, the population was 16,843.[1] The county seat is Fairfield.[2] The county was founded in January 1839, and was named after U.S. President Thomas Jefferson.[3][4]


  1. "State & County QuickFacts". United States Census Bureau. Archived from the original on 12 July 2011. Retrieved 18 July 2014.
  2. "Find a County". National Association of Counties. Archived from the original on 31 May 2011. Retrieved 7 June 2011.
  3. Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 168.
  4. Jefferson County Archived 10 October 2007 at the Wayback Machine