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Johnson County, TN
| Johnson County Population: 17,499 Population Density: 58.6 per square mile Water Area Percentage: 1.41% (4.26 square miles) Land Area Percentage: 98.59% (298.47 square miles) Total Area: 302.73 square miles Housing Units: 7,879 per square mile County Links Lakes In Johnson County • Watauga Lake | 
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| Quick Links Robert S. Kerr Reservoir News Robert S. Kerr Reservoir Photos Robert S. Kerr Reservoir Videos | 





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