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Johnson County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 17,948. Its county seat is Mountain City. It is the state's northeasternmost county, sharing borders with Virginia and North Carolina.
Country:
United States
State:
Tennessee
Founded:
1836
Named for:
Thomas Johnson, early settler
Seat:
Mountain City
Largest town:
Mountain City
Congressional district:
1st
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Data from:
en.wikipedia.org