Johnson County, Illinois

Johnson County is a county in the U.S. state of Illinois. According to the 2010 census, it has a population of 12,582.[1] The county seat is Vienna.[2] Johnson County was founded in 1812 and named for Richard M. Johnson, who was then a U.S. Congressman from Kentucky.[3]

References
  1. "State & County QuickFacts". United States Census Bureau. Archived from the original on July 12, 2011. Retrieved July 6, 2014.
  2. "Find a County". National Association of Counties. Archived from the original on 2015-05-10. Retrieved 2011-06-07.
  3. Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 169.


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