Jefferson County Address Data

  • State: Iowa
  • County: Jefferson County
  • County Seat: Fairfield
  • FIPS: 19101
  • Founded in: 1839
  • Population: 18,381
  • Density: 42 Persons/Square Mile
  • Area: 435 Square Miles
  • Government Type: County
  • Authority: Home Rule
  • Legislative Body: Board of Supervisors
  • Legislative Body Size: 3
  • County Contact: 51 W Briggs
    County Courthouse
    Fairfield, IA
  • County site: http://www.jeffersoncountyiowa.com/
  • Labor Force: 9,203
  • Unemployment Rate: 2.40%
  • Gross Domestic Product (GDP): $677.2 M

Top Cities in Jefferson County

Major Cities (population)

Neighbor Counties

  • Davis County
  • Henry County
  • Keokuk County
  • Van Buren County
  • Wapello County
  • Washington County
On this page