Union County is a county located in the U.S. state of Tennessee. As of the 2020 census, its population was 19,802. Its county seat is Maynardville. Union County is included in the Knoxville metropolitan statistical area.
Country: United States
State: Tennessee
Founded: January 23, 1856
Named for: Either its creation from parts of five other counties or its support for the Union during the Civil War
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