Clarksville is a city in Montgomery County, Tennessee, United States, and its county seat. The city had a population of 166,722 as of the 2020 c…Clarksville is a city in Montgomery County, Tennessee, United States, and its county seat. The city had a population of 166,722 as of the 2020 census, making it the fifth-most populous city in Tennessee. It is the principal city of the Clarksville metropolitan area, which consists of Montgomery and Stewart counties in Tennessee and Christian and Trigg counties in Kentucky.
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